Answer:
В
Explanation:
Inherited variation
Natural selection is a process that occurs when certain inherited traits or variations of a species give certain individuals an advantage in their ability to survive and reproduce in a given environment. Therefore, for natural selection to occur, there must be inherited variation within a population. Other conditions such as unlimited resources, a static environment, and a long life span do not necessarily have a direct impact on natural selection. However, these factors can affect the relative fitness of individuals with different inherited variations and thus influence the outcome of natural selection.
Nature is to nurture as _____ is to _____.
a. culture; society
b. environment; genetics
c. genetics; environment
d. biology; physics
Nature is to nurture as genetics is to the environment, hence option C is correct.
What is the effect of environment and genetics?Nature states that how a person's personality is influenced by their genes, whereas nurture states how a person's environment including their relationships and experiences has an impact on their growth.
Genetics describes the nature of the person, and how their body is influenced, according to the different organisms, but nurture is influenced by the environmental factors around the person.
Therefore, genetics and environment is the correct option.
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challenges faced by teenage pregnancy
Answer:
Teenage pregnancy can present a number of challenges for the teenage mother, the father, and their families. Some of the common challenges include:
Education: Teenage mothers may find it difficult to continue their education, as they may have to take time off to care for their child. This can make it more difficult for them to complete their studies and find employment later on.Financial : Teenage mothers are often financially dependent on their parents or government support, and they may struggle to provide for their child on their own.Health: Pregnancy and childbirth can be risky for teenage mothers, as their bodies may not be fully developed to handle the physical demands of pregnancy.Social: Teenage mothers may face judgement and rejection from their peers, family members and society in general. This can make it difficult for them to form supportive relationships, which can be important for their emotional well-being and the well-being of their child.Emotional: Teenage mothers may experience a range of emotions including anxiety, depression, and stress during and after the pregnancy. They may also feel guilty, overwhelmed, or isolated.Relationship: Teenage mothers may find it difficult to maintain a healthy relationship with their partner or the father of their child. This can be due to lack of maturity, financial strain, social pressure and other factors.It's important to note that these challenges vary by individual, culture and context. And those who are facing teenage pregnancy should have access to support, information and education to help them navigate the challenges they may face.
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if 1 out of every 250,000 people have disease x, a nonlethal autosomal recessive disorder, what is the approximate carrier frequency of this disease?
q2 = The disease's occurrence
p = 1 - q = 499/500 = 1 carrier frequencies = 2pq = 2(1/500)(1) = 1/250; q2 = 1 in 250,000.
It is straightforward to determine the carrier frequency to use some very basic algebra if the prevalence of such an autosomal recessive disease was known.
For instance, if the disease incidence is 1 in 10,000.
q2 = 1/10000 &
q = 1/100 .
Since p + q = 1, p is equal to 99/100.
then, it is possible to determine the carrier frequency as
2X99/100x1/100, or about 1 in 50, is the probability.
As a result, the carrier signal can be roughly estimated by
derived by multiplying the disease incidence's square root
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Which of the following statements concerning pathology, infection, and disease is true? The term infection is synonymous with the term disease.Pathology refers to the study of structural and functional changes that occur in the body as a result of a disease.
The true statement about pathology, infection, and disease is: Pathology refers to the study of structural and functional changes that occur in the body as a result of a disease.
Infection is the appearance of microorganisms inside the living body where they multiply themselves and spread across the body. The microorganisms can be virus, bacteria, fungi, protozoan, etc. They can hamper with the normal functioning of the host body.
Pathology is the study of diseases. It is the interdisciplinary branch of science and medicine. The term pathology is derived from ancient Greek roots. Pathology can be of 4 types: Anatomic, Cytopathology, Forensic and Molecular.
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by altering metabolism, which gland can have a sizable effect on personality with overactivity of this gland causing excitability and nervousness and underactivity of this gland causing one to be lethargic and sleepy?
By altering metabolism, thyroid gland can have a sizable effect on personality with overactivity of this gland causing excitability and nervousness and underactivity of this gland causing one to be lethargic and sleepy.
To clarify, the thyroid gland is an endocrine (i.e., ductless) gland that is situated near the windpipe. Thyroxine and triiodothyronine are among the hormones produced by this gland. The overactivity of this gland is a symptom of hyperthyroidism. The involvement of this gland is related to the disorder known as hypothyroidism. A crucial hormone gland, the thyroid gland is important for the growth, development, and metabolism of the human body. By continuously releasing a regular amount of thyroid hormones into the bloodstream, it aids in the regulation of numerous bodily processes. The thyroid gland creates hormones that control the body's metabolic rate, which affects bone growth and maintenance, heart, muscle, and digestive function.
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cystic fibrosis is a genetic disorder that creates excessive mucus in human organs. what is a person with this disorder missing? question 13 options: the contractile proteins used in muscle movement the gene that codes for an important cell membrane protein an important organ that breaks down mucus an important protein easily obtained through food
Cystic Fibrosis is a genetic disorder that creates excessive mucus in human organs, a person with this disorder is missing:
The gene that codes for an important cell membrane protein is called Cystic Fibrosis Transmembrane Conductance Regulator (CFTR).
CFTR is a chloride channel that regulates the movement of chloride ions across cell membranes, this channel is responsible for maintaining the proper balance of salt and water in the body.
The mutation of the CFTR gene leads to the malfunction of the chloride channel and results in the production of thick, sticky mucus that clogs the airways, the pancreas, and other organs.
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during phosphorylation of stat5b proteins, phosphate groups are exchanged for what atoms on tyrosine residues?
During phosphorylation of stat5b proteins, phosphate groups are exchanged for atoms on tyrosine residues-MISSED: Hydrogen atoms in hydroxyl groups
JAK2 is a tyrosine kinase, as the passage mentions. Tyrosine has a nucleophilic hydroxyl group that interacts with the terminal phosphate group (-PO32-) on ATP, which causes an exchange of the hydrogen atom from the hydroxyl group for the phosphate group of ATP. I misread the question; I thought it asked what the phosphate groups would bind to, which would be the oxygen due to nucleophilic attack, rather than what it would replace, which would be the hydrogen, during phosphorylation of stat5b proteins, phosphate groups are exchanged for hydrogen atoms on tyrosine residues.
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in the tree below, assume that the ancestor had a long tail, ear flaps, external testes, and fixed claws. based on the tree and assuming that all evolutionary changes in these traits are shown, what traits does a sea lion have?
When the ancestor had long tail, ear flaps, external testes, and fixed claws then a sea lion will have short tail, ear flaps, abdominal testes, and fixed claws.
What is meant by evolution?Evolution is the over many generations, slow change in the hereditary features of biological populations. These characteristics are the expressions of genes, which are transferred from parent to child during reproduction.
Evolution in biology refers to the change in a species' characteristics over a number of generations and is based on the process of natural selection. Evolutionary processes provide diversity at every degree of biological complexity. The final common ancestor of all life on Earth is the last universal ancestor.
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true/false. A married couple decide they wish to start a family and they really want to have a baby girl. Because of financial considerations, they decide they will have children until they have a girl or a total of 3 children. If the probability of having a boy or girl is equally likely, determine the expected number of boys.
Answer:
you said t/f but then you asked a question on the end? I’ll do my best tho lol
If it’s true of false, boys are more common than girls.
I guess that could also answer the question. Boys are more commonly birthed than girls, although I feel as if lots of times girls are first born, or maybe that’s just the people around me. Hope it helped :))
Explanation: what I’ve learned in life and from charts lol
Which situation would most likely lead to allopatric speciation? a. Flood causes the formation of a new lake. b. A storm causes several large trees to fall down. c. A mutation causes a new trait to develop. d. An injury causes an organism to seek out a new food source.
(C) flood causes the formation of a new lake would most likely lead to allopatric speciation.
Allopatric speciation occurs when a species separates into two separate groups which are insulated from one another. A physical hedge, similar to a mountain range or a raceway, makes it insolvable for them to breed with one another.
Allopatric speciation due to geographic separation The northern spotted owl and the Mexican spotted owl inhabit geographically separate locales with different climates and ecosystems. The owl is an illustration of allopatric speciation.
Allopatric speciation, also known as geographic speciation, is speciation that occurs when natural populations of the same species come insulated due to geographical changes similar to mountain structure or social changes similar to emigration.
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Which of the following best describe how genes allow cells to carry out essential life functions?
Choose 2 answers:
Choose 2 answers:
(Choice A)
A
Genes encode molecules that are necessary for cell specialization.
(Choice B)
B
Genes can code for proteins.
(Choice C)
C
Genes can code for nucleotides, which help to determine the specialized roles of organelles in the cell.
Answer:
(Choice A)
A
Genes encode molecules that are necessary for cell specialization.
(Choice B)
B
Genes can code for proteins.
Both A and B are correct. Genes are segments of DNA that carry the genetic information necessary for the cell to carry out essential life functions. The genetic code in the genes is transcribed into RNA, which is then translated into proteins. Proteins are essential molecules that carry out a wide range of functions in the cell, such as catalyzing metabolic reactions, replicating DNA, responding to stimuli, and transporting molecules across cell membranes. They also play a critical role in cell specialization by controlling the differentiation of cells and the formation of tissues and organs.
imagine that two unlinked autosomal genes with simple dominance code in goats for size, where l is large and l is small, and for color, where b is brown and b is white. if a small, white male goat mates with a large, brown female goat of an unknown genotype, what is the probability that they would produce large, white offspring assuming equal proportions of the alleles in the population?
1) Tall and petite alleles of the T gene;
Allele B is brown.
the white allele ,Second, there is a 25% chance of generating little.
The height gene and the color gene both have recessive traits in the male.
His genotype is ttbb, which accounts for his petite stature and white skin.
To express his characteristics, he possesses both recessive alleles from each gene.
2) The genotype of the female is unknown, but we do know that she is tall and brown.
Her genotype might be either TTBB or TtBb, respectively.
When both alleles of each gene are dominant, she would be dominant homozygotic in the first scenario.
In the second scenario, she would have both a dominant and a recessive allele. She is heterozigotic for both genes as a result.
When both alleles of each gene are dominant, she would be dominant homozygotic in the first scenario.
In the second scenario, she would have both a dominant and a recessive allele. She is heterozigotic for both genes as a result.
3)There will be two different outcomes for the likelihood of the offspring due to the two possible genotypes for the female.
First, there is a 0% chance that ttbb x TTBB will result in little, white offspring. Because of the following, the progeny would be: TtBb- exhibits the tall and brown characteristics.Second, there is a 25% chance of generating little, white offspring if ttbb crosses with ttbb. This is due to the genotype ttbb being present in up to 25% of the kids. I made the punnet square for easier comprehension (see the blue part).
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According to the graph above, what is the relationship between Helper T Cells and HIV levels
in the body over the course of the infection? Provide an explanation for this trend.
When a person's CD4 count goes below a particular threshold, they are diagnosed with AIDS.
what are the T helper cells ?
T helper cells (T h cells), commonly known as CD4 + cells or CD4-positive cells, are a kind of T cell that contributes to the adaptive immune system. They help other immune cells function by producing cytokines. They are thought to be necessary for B cell antibody class switching, breaking cross-tolerance in dendritic cells, and activating and growing cytotoxic T lymphocytes.
Helper T cells are essential for immune system function and activate when antigens from disease-causing bacteria are encountered. Antigens are biological markers that allow microbes such as bacteria and viruses to be identified.
When a person's CD4 count goes below a particular threshold, they are diagnosed with AIDS. The treatment recommended by a doctor is determined by the CD4 count.
Continue reading to discover more about T cells and their functions, as well as the relationship between T cell levels and HIV and AIDS.
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What are the frequencies of each offspring genotype in a cross between rr female and a rr male? a. ½ homozygous dominant and ½ heterozygous b. ½ homozygous dominant and ½ homozygous recessive all heterozygous c. all homozygous dominant?
½ homozygous dominant and ½ heterozygous are the frequencies of each offspring genotype in a cross between rr female and a rr male.
What is meant by genotype?
An organism's genotype is made up of all of its genetic components.The alleles or variations that an individual carries in a specific gene or genetic region are also referred to as the genotype.The number of copies of each chromosome found in that species, also known as ploidy, determines how many alleles a person can have for a certain gene.In diploid organisms like humans, there are two complete sets of chromosomes, which means that each person has two alleles for each gene.Homozygous refers to a genotype when both alleles are the same. Heterozygous refers to a genotype when there are two distinct alleles.To learn more about genotype refer to
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Plants respond to their environment in many different ways. Design a controlled experiment to test the effect of one environmental factor (such as light, acidity of precipitation, etc.) on some aspect of plant growth. In your experimental design be sure to:
Part A: State the hypothesis, making sure to identify what you are testing. (1 point)
Part B: List the steps of the procedure. (1 point)
Part C: Identify the independent and dependent variables in the experiment. (2 points)
Part A: State the hypothesis
Hypothesis: Increasing the light intensity will result in an increase in the growth rate of bean plants.
Part B: List the steps of the procedure
Obtain bean seeds and plant them in soil in pots.Place half of the plants in an area with normal light intensity and the other half in an area with increased light intensity.Measure the height of each plant once a week for four weeks.Record the data and compare the growth rates of the plants in normal light and increased light.Analyze the data and draw conclusions about the effect of light intensity on the growth rate of bean plants.Part C: Identify the independent and dependent variables in the experiment
Independent variable: Light intensity (normal vs increased)
Dependent variable: Growth rate of bean plants (measured by height)
The independent variable is manipulated by the experimenter, in this case by placing the plants in different light conditions. The dependent variable is measured and changes as a result of the manipulation of the independent variable.
Experimental Variable:
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what are the proteins released by leukocytes to recruit other immune cells and regulate the immune response?
Cytokines are protein-rich hormones released by white blood cells that regulate immunological responses. Cytokines facilitate immune cell communication and the recruitment of different types of immune cells to an infection location.
Immune cells and a number of other cells release tiny, soluble proteins. They function as chemical messengers in the immune system.
The immune system's key proteins are primarily cytokines (a type of hormone responsible for communication between immune system cells), antibodies (immunoglobulins), and complement proteins..
A white blood cell is referred to as a leukocyte. Leukocyte is made up of the combining term leuk/o (which means "white") with the suffix -cyte (meaning cell).
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the plants in a biome grow very tall. which statement most likely describes the abiotic factors in the biome?(1 point) responses the biome receives abundant sunlight. the biome receives abundant sunlight. the biome has very cold temperatures year round. the biome has very cold temperatures year round. the biome has limited rainfall. the biome has limited rainfall. the biome's soil lacks nutrients. the biome's soil lacks nutrients.
Trees growing tall indicates an abundance of sunlight in the biome. The correct response is that the biome receives abundant sunlight.
Plant growth is dependent on various factors like sunlight, water and temperature, and nutrients from the soil. The absence or extreme of any can be detrimental to growth.
Plants like other organisms require sunlight as they develop. Abundance of sunlight promotes higher rates of photosynthesis, providing an opportunity for increased growth of the trees.
Cold temperatures year round inhibit the growth of the trees and lead to stunted growth. This is why trees in tropical regions are taller than the trees in tundra and taiga regions.
As the plant grows it requires water. Water is required for the conduction of nutrients, in photosynthesis and also in the cells to maintain their viability. Limited rainfall would make the trees be able to support a smaller biomass, that is, they would not grow very tall.
If the soil is not fertile it cannot support the growth of trees, as trees grow they require nutrients majorly NPK and other macro and micronutrients. In fertile soil leads to stunted growth.
Considering all the nutrients required, limitation rain and nutrients stunt the growth same is true for the trees facing extreme cold temperatures year-long. Abundance of sunlight with ample nutrients and optimum conditions does however lead to taller growth in trees.
Therefore if the trees in that region grow tall, it likely receives abundant sunlight.
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the equation for photosynthesis is the reverse of cellular respiration. consider why this is important. what would happen if plants or animals produced products that were not consumed by other organisms? how do plants and other organisms recycle the matter used in these two processes?
By transforming light energy into chemical energy and vice versa, the equations for photosynthesis and cellular respiration serve to maintain ecosystem equilibrium.
The accumulation of products would upset ecosystem equilibrium and prevent the stored energy from being used if they were not devoured by other creatures.
How does photosynthesis work?Photosynthesis is the process through which water, dioxide (CO2), and sunshine are transformed into food and oxygen. Plants, microalgae, and some microbes all use this technique.
What is breathing?During respiration, carbon dioxide is expelled in the opposite direction, back into the environment, while oxygen is moved from the outside surroundings to the mitochondria within tissues.
The biochemical definition of respiration, which relates to a metabolism by which an animal receives power in the form of by oxidising carbohydrates and releasing waste products differs from the physiological definition. Despite the fact that normal respiration is required to maintain cellular respiration .
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Which of the following characteristics of living things best explains why birds fly south for the winter? Question 1 (2 points) Saved Which of the following characteristics of living things best explains why birds fly south for the winter? Living things respond to their environment. Living things maintain internal balance. ILiving things are made up of units callcd cclls_ owestion 2 (2 points) SvIng WaHHarO ONs Dy which organisms kecp their Intermal conditions Fairly constang Is called? Uhplncostasis'
An illustration of how living things react to their surroundings is when some North American birds migrate south for the winter.
Every living thing has the capacity to react to environmental stimuli. Living organisms, for instance, react to alterations in light, heat, sound, and chemical and mechanical touch. Organisms have sensory organs like eyes, hearing, and taste buds that they can use to detect inputs.
An organism must coordinate its reactions in order to react to environmental changes effectively. An organism's functions are coordinated by a network of neurons and several hormone-like chemical regulators. Several effectors, including muscles and glands, are used by the organism to react to the stimuli. In the process, energy is often used.
As the environment around them changes, organisms adapt their behavior. An organism, for instance, might move in response to its surroundings. Such reactions take the form of distinct patterns that make up an organism's behavior. A stone rolling down a hill is not the same as an animal responding to a stimulus; the behavior is active and not passive. Nonliving things do not exhibit responsiveness, only living things do.
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how does a presynaptic cell ('sending' neuron) communicate with a postsynaptic cell ('receiving' neuron)?
Communication between neurons occurs at specialized structures called synapses.
A presynaptic neuron releases chemical neurotransmitters, which diffuse across the synapse and bind to receptors on the postsynaptic neuron. Depending on the type of neurotransmitter and the receptors it binds to, this can lead to a variety of changes in the postsynaptic neuron.
For example, some neurotransmitters can cause an influx of positively charged ions into the postsynaptic neuron, which can make it more likely to fire an action potential. Other neurotransmitters can inhibit the postsynaptic neuron from firing an action potential.
Additionally, some neurotransmitters can modulate the strength of the synapse by increasing or decreasing the number of receptors on the postsynaptic neuron or by changing the sensitivity of the receptors.
Overall, the presynaptic neuron is sending a chemical message to the postsynaptic neuron, which can lead to changes in the electrical or chemical properties of the postsynaptic neuron, and ultimately affect the transmission of information through the nervous system.
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The actions of the internal intercostals are most important during ______. a. forced inspiration b. forced expiration c. normal inspiration
The actions of the internal intercostals are most important during forced inspiration.
In order to expand the lung's volume during forced inspiration, the scalene and other neck muscles contract and raise the thoracic wall. The abdominal accessory muscles, including the obliques, contract during forced expiration, pushing the internal organs up into the diaphragm. During forced breathing, additional muscles are used to quickly expand and compress the thoracic cavity volume. It generally happens during exercise.
Exercise helps you maintain a healthy weight, reduces your risk of disease, and makes it easier for you to complete daily tasks. It also improves the health of your bones and muscles. Within starting an exercise programme, increased productivity becomes apparent after a few weeks. People who prioritise their health and fitness and exercise regularly have greater energy and focus.
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What is it called when the ventricles relax and blood pressure at lowest?
Diastole is the relaxed phase of the cardiac cycle when the chambers of the heart are re-filling with blood.
When does blood pressure drop and the ventricles relax?
The ventricles start to relax after ventricular repolarization, and their internal pressure decreases. One heart cycle is marked by the passage of blood from the atria into the ventricles when the pressure falls below that of the atria, opening the atrioventricular valves.
What is the ventricle relaxing known as?
During both the diastole and systole, the ventricles pump. The cardiac cycle, which includes all of the activities that take place between the start of one heartbeat and the start of the next, can be split into two phases: a relaxation phase known as diastole and a contraction phase known as systole.
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The synaptonemal complex with which TEX11 interacts serves as a protein-DNA bridge between what nuclear bodies?
It is the place where chromosomes connect during synapsis (tetrads)
Since there are currently two unique sister chromatid pairs and a total of four chromatids, the two homologous chromosomes are collectively referred to as a tetrad. Homologous chromosomes physically link at points of intersection known as chiasma during synapsis.
A chiasma is a structure created by cross recombination between two homologous chromosomes. The meiotic process physically connects homologous chromosomes. In other terms, a chiasma is the location where two homologous chromosomes that are not sisters come into touch.What are synapsis and chiasmata?
Answer and justification While chiasma is the point of contact between unrelated chromatids from homologous chromosomes during prophase, synapsis is the pairing of homologous chromosomes during prophase. Synapsis causes chiasm to happen.
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If the percentage of adenine is 43% in the DNA molecule. what is the percentage of thymine, guanine, and cytosine?
Answer:
Explanation: Adenine= Thymine
Cytosine=Guanine
[tex]A=T\\A=43%\\[/tex]
So,[tex]T=43[/tex]
Now,[tex]C+G=100-(43+43)\\ =100-86\\ =24\\C=12\\G=12[/tex]
The percentage of Adenine in DNA is equal to the percentage of Thymine in DNA. The percentage of Cytosine in DNA is equal to the percentage of Guanine in DNA.
Is selection adaptive or nonadaptive?
The evolution of large genomic networks is shaped over many generations by a variety of factors.
These are divided into two categories: adaptive forces like natural selection and non-adaptive forces like recombination, genetic drift, and random mutation.
Individuals with beneficial qualities are able to reproduce successfully through natural selection. These characteristics are passed on to future generations. Adaptive evolution refers to evolution in which modifications are driven by natural selection.
Natural selection is adaptive evolution because it acts to enhance the frequency of beneficial alleles and traits while decreasing the frequency of detrimental qualities.
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the serum from a patient of african-american descent is reactive with all screening and panel cells. which antibody directed to a high incidence antigen is most likely to be present?
The serum from a patient of african-american descent is reactive with all screening and panel cells. Antibody directed to a high incidence antigen is most likely to be present is Anti-U
Antibodies are plasma proteins produced by B cells that develop from lymphocytes that differentiate into plasma cells. Antibodies are used to protect the body from antigens such as viruses and bacteria. Antibody checks are used to determine the levels of antibodies in the body, including those obtained from vaccinations.
Crossmatching is a match-match test to determine the antibody reaction in the patient's serum with the blood cells of the transfused donor. When all patients of African American descent are reactive with all screening cells and panels,this indicates the presence of antibodies in the patient's serum that can destroy the transfused erythrocytes. So it is necessary to direct Anti-U antigen which is a high incident antigen found in the red blood cells of black people to protect the body.
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The elbow is also referred to as the
The elbow is also referred to as the olecranon.
Option C is correct.
What is the elbow?The elbow is described as a hing_ed joint made up of three bones, the Humerus, ulna, and radius.
The ends of the bones are covered with cartilage where the cartilage has a rubbery consistency that allows the joints to slide easily against each another which functions as a means to absorb shock. The bones are held together with ligaments that form the joint caps.
In conclusion, the elbow is made up of the humeroulnar, humeroradial and prox_imal radioulnar joints.
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chewing, made possible by the masseter and temporalis muscles, is also called
Chewing, made possible by the masseter and temporalis muscles, is also called mastication muscle.
What is mastication muscle?The masseter, medial pterygoid, lateral pterygoid, and temporalis muscles are the main mastication (chewing) muscles. The four primary masticatory muscles move the jaw by attaching to the rami of the mandible.
While the main vascular supply comes from branches of the maxillary artery, all muscles of mastication are innervated by motor fibers of the mandibular branch of the trigeminal nerve.
Hence, the masseter and temporalis muscles are also called mastication muscles.
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a researcher is studying two different species. which of the following sets of observations would best support the claim that the two species have structural similarities as a result of convergent evolution? responses genetic similarity function of structure form of structure low same different , genetic similarity function of structure form of structure low same different genetic similarity function of structure form of structure low different same , genetic similarity function of structure form of structure low different same genetic similarity function of structure form of structure high same different , genetic similarity function of structure form of structure high same different genetic similarity function of structure form of structure high different same
Option A) Genetic Similarity - Low, Function of Structure - Same, Form of Structure - Different is the appropriate response.
Convergent evolution occurs when species have similar-function but different-form analogue body parts. This is not present in ancestors because it is a characteristic that they independently developed, making genetic similarity low. Convergent evolution is the process by which two organisms with no recent common ancestor become increasingly similar as they adapt to the same ecological niche. The organisms' convergent phenotypes are known as analogous structures, and they have similar structural forms (such as bird wings and bat wings). It is the independently occurring evolution of traits that are shared by species across historical eras.
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scientific hypotheses must be testable. applying this criterion, are cuvier's explanation of the fossil record and lamarack's hypothesis of evolution scientific? explain your answer in each case.
By this criterion, Cuvier's explanation of the fossil record and Lamarck's idea of evolution are both scientific. Cuvier believed that species did not change throughout time.
Cuvier also proposed that extinctions in certain locations were triggered by rapid, catastrophic catastrophes, and that such areas were eventually repopulated by a new group of species that moved from other areas. These claims may be checked against the fossil record, and his claim that species do not evolve has been proven false. Lamarck's concept of use and disuse, for example, may be used to establish testable predictions for fossils of groups such as whale forebears as they adapted to a new home. Lamarck's notion of use and disuse, as well as his linked principle of the inheritance of experienced features, can be tested directly in live creatures; both have been proved to be erroneous.
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