Due to the difference in salinity and osmotic pressure, freshwater fish will probably perish if placed in sea water. Large African lakes are home to the bulk of species.
A freshwater fish may face a variety of physiological and osmotic stresses in saltwater or seawater that might be detrimental or even lethal. Freshwater fish have evolved to be able to retain a higher concentration of salts and other solutes in their bodies than the water around them, allowing them to survive in habitats with lower salt concentrations than saltwater. In seawater, the fish may lose water and take in too much salt, which can cause electrolyte imbalances, dehydration, and other problems that may finally result in death. As a result, it's crucial to make sure fish are exclusively kept in settings that mimic their natural habitat.
learn more about freshwater fish here:
https://brainly.com/question/29771605
#SPJ4
Systematists have used a wide variety of characters to reconstruct the phylogenies of particular groups of organisms. which one of the following types of characters can produce an estimate of phylogeny?
1. behavioral characters
2. DNA sequences
3. protein sequences
4. morphological characters
All the above characters combined can produce an estimate of phylogeny.
Phylogenetic trees represent hypotheses about the evolutionary relationships among a group of organisms. A phylogenetic tree may be built using morphological (body shape), biochemical, behavioral, or molecular features of species or other groups. In building a tree, we organize species into nested groups based on shared derived traits (traits different from those of the group's ancestor). A phylogenetic tree may be built using morphological (body shape), biochemical, behavioral, or molecular features of species or other groups. In building a tree, we organize species into nested groups based on shared derived traits (traits different from those of the group's ancestor). The methods of constructing phylogenetic trees include the distance-based methods, parsimony, maximum likelihood, and Bayesian inference methods . The data used in reconstruction of a DNA-based phylogenetic tree are obtained by comparing nucleotide sequences
Learn more about Phylogeny here:
https://brainly.com/question/1620210
#SPJ4
William harvey provided proof of what process of the human body? a. the nervous system b. digestion c. blood circulating d. the brain as the source of thought
William Harvey provided proof of blood circulation in the human body, which is in Option C, as he explains how the blood circulated throughout the body and returned to the heart.
What is the contribution of William Harvey?Harvey's research explained and demonstrated that the heart was a pump that circulated blood throughout the body and that veins and arteries were linked in a closed system, and from his studies, the circulatory system is understood.
Hence, William Harvey provided proof of blood circulation in the human body, which is in Option C, as he explains how the blood circulated throughout the body and returned to the heart.
Learn more about William Harvey here.
https://brainly.com/question/26014369
#SPJ1
if you are busy all day and do not have time to eat, the hormone that will be released by your pancreas is __________.
If you are busy all day and do not have time to eat, the hormone that will be released by your pancreas is glucagon .
In general the Exocrine function is to release enzymes through the pancreatic duct to the intestines to digest food. Important function of endocrine glands is to release hormones that helps insulin and glucagon to released directly into the blood.
Hence , the posterior lobe produces two hormones, vasopressin and oxytocin. Hormones like vasopressin and oxytocin when released inside the hypothalamus they sends messages to the pituitary gland through nerve cells. Vasopressin is also known as antidiuretic hormone (ADH).
To learn more about glucagon, here
brainly.com/question/7542619
#SPJ4
A trait whose development requires the action of thousands of genes but whose variation is due to variation atonly two loci is?
a.Extranuclear
b.Digenic
c.Polygenic
d.Meristic
A trait that is influenced on two or more genes, such as height and skin tone, is referred to as a polygenic trait .
Polygenic traits are due to the actions of more than one gene and often, their interaction with the environment. These usually result in a measurable range in phenotype, such as height, eye color or skin color. These are known as multifactoral or quantitative characteristics. Polygenic inheritance results in an additive effect of the genes on a single phenotype. Genetic variety comes from three different sources: sexual reproduction, gene flow, and mutation. Simply put, a mutation is a DNA change. Although not particularly common, mutations frequently cause harm to a population. As a result, mutations are typically rejected by evolutionary processes. Euploidy (variable numbers of complete chromosomal sets) and aneuploidy are chromosome number variations (partial chromosome sets). Diploid, haploid, auto- or allopolyploid, and polytene are some of the different types of euploids, which have different numbers on complete chromosome sets. Partial chromosomal sets are present in aneuploids .
Learn more about Polygenic trait here:
https://brainly.com/question/29918270
#SPJ4
the inferior, conical end is called the ______. it projects slightly anteroinferiorly toward the left side of the body.
The inferior, conical end is called the apex. It projects slightly anteroinferiorly toward the left side of the body. The inferior border is formed by the right ventricle. A person's foundation is their human body. It is composed of several cell types that come together to create tissues and, eventually, organ systems.
They ensure homeostasis and the survival of the human body. It has a trunk, a head with hair, a neck, hands, legs, and feet. It also has limbs and legs. The thorax and belly are parts of the trunk. In-depth research is done on human anatomy, physiology, histology, and embryology. Human anatomy is distinct from that of other animals. The core subjects of physiology are the systems and organs of the human body and how they function. The consistent presence of safe blood chemical concentrations, such as oxygen and sugar, is known as homeostasis.
To learn more about human body click on the given link: brainly.com/question/29352801
#SPJ4
bones are classified by whether they are weight bearing or protective in function. true/false
Answer:
true
I hope it helps....
The property of soil which describes how well soil holds water is called
Soil porosity is the property of soil that describes how much amount of water the soil can hold, the correct option is B.
The minuscule spaces between soil particles are known as soil porosity or soil pore space. These pores are big and numerous enough in healthy soil to hold the water, oxygen, and nutrients that plants require to receive through their roots. Micro-pores, macro-pores, or bio-pores are the three main types of soil porosity.
These three groups assist us comprehend the soil's permeability and water-holding capacity by describing the size of the pores. For instance, the relatively small gaps of micropores are less impacted by gravity and may hold onto water and nutrients longer than macropores, which lose water and nutrients to gravity more quickly.
To learn more about soil follow the link : https://brainly.com/question/23813511
#SPJ4
The complete question is:
The property of soil which describes how well soil holds water is called
A. field capacity
B. Soil porosity
C. Buffering capacity
D. surface tension
The field of conservation biology
a. tries to increase speciation events in order to increase biodiversity
O b. tries to conserve every species, everywhere
O c. developed in response to government intervention
O d. was initially viewed as too measurement-oriented, looking at details and not at the big
Oe. attempts to integrate an understanding of evolution, ecology, and extinction
The field of conservation biology attempts to integrate an understanding of evolution, ecology, and extinction. The correct option is E.
What is conservational biology?By examining how evolution, ecology, and extinction interact, conservation biology aims to comprehend and safeguard biodiversity.
This includes researching the causes of species extinction, such as habitat loss, excessive exploitation, and climate change, and creating plans to lessen their effects.
It is also not seen as being overly measurement-focused, focusing on the little print rather than the broad picture.
Actually, conservation biology frequently necessitates a multidisciplinary and integrated approach that takes into account both the biological and socioeconomic aspects that have an impact on species and ecosystems.
Thus, the correct option is E.
For more details regarding conservational biology, visit:
https://brainly.com/question/3299406
#SPJ1
process by which two species evolve in response to changes in each other is called by?
Coevolution is the procedure of mutual evolution that happens when two or more species change in response to the evolution of one another.
Coevolution is most commonly understood as the interaction and influence of two organism groups on the evolvement of other organisms. At different levels of biological organization and co-evolution of the groups under study, groupings can be formed.
Ecologists and evolutionary biologists frequently argue over the various types of coevolution, including pairs coevolution, dispersion coevolution, and nucleotide sequences coevolution.
A large portion of evolvement is coevolution, including the coevolution of parasitic infections and guests, predators and prey, rivals and mutualists. Interactions coevolve as an already geographic mosaic. The traits as well as life narratives of other species are constantly changing as a result of interactions between species.
Learn more about “ Coevolution ” visit here;
https://brainly.com/question/1489642
#SPJ4
in a cross between aabbccdd and aabbccdd, what proportion of the offspring would be expected to be a b c d ? (a means aa or aa.)
The proportion of offspring with a genotype ABCD is 3/8.
The type of cross given involves the inheritance of four genes simultaneously. In such cross, we can find the proportions by multiplying each gene seperately. Thus, performing the crosses we would get:
AA × Aa: AA, AA, Aa, Aa
Bb × Bb: BB, bb, Bb, bb
Cc × cc: Cc, cc, Cc, cc
DD × dd: Dd, Dd, Dd, Dd.
Now, we are asked the probability of Aa or Aa. Now, finding the probabilities seperately:
Aa: 2/4, Bb: 1/4, Cc: 2/4, and Dd: 4/4
According to the laws of inheritance given by Mendel, we know that the genes segregate independently without the influence of others. Thus, from the above crosses, we can say that in a cross between AABbCcDD and AaBbccdd, the proportion of the offspring expected to be AaBbCcDd is 3/8.
To know more about crosses, refer:
https://brainly.com/question/526191
#SPJ4
Complete question is:
In a cross between AABbCcDD and AaBbccdd, what proportion of the offspring would be
expected to be A_B_C_D_? (A_ means AA or Aa.)
a.) 3/16
b.) 3/256
c.) 3/32
d.) 3/4
e.) 3/8
The most important primary producers in marine ecosystems are _____. euglenids dinoflagellates diatoms seaweeds
The most important primary producers in marine ecosystems are diatoms.
Marine ecosystems An estimated 20% of the Earth's photosynthetically fixed CO2 is produced each year by diatoms, one of the biggest primary producers in the ocean.They need water because they are producers, thus they can be found in bogs, lakes, rivers, oceans, and even moist moss. Since silicon dioxide is the primary ingredient in glass, their cell wall is what makes them special.They are naturally photosynthetic, so because carotenoids and chlorophyll are present, they can manufacture their own sustenance. These energy-producing photosynthetic diatoms are a major source for a wide range of consumers. Manufacturers include diatoms.They often rule over well-mixed coastal and upwelling areas, where the organic carbon they produce supports fruitful fisheries like those in the Peruvian and Benguela upwelling systems.For more information on diatoms kindly visit to
https://brainly.com/question/17184564
#SPJ4
Why does the rate of diffusion of carbon dioxide increase during exercise.
When you exercise, there are more alveoli recruited for gas exchange, therefore the surface area available for gas exchange increases, and thus the rate of diffusion of gases such as oxygen will increase.
What do you mean by diffusion?Diffusion is the net movement of anything generally from a region of higher concentration to a region of lower concentration. Diffusion is driven by a gradient in Gibbs free energy or chemical potential.
The net movement of oxygen and carbon dioxide across the alveolar-capillary membrane of mammalian lungs and the net movement of glucose down the concentration gradient are diffusion examples in biological systems.
Diffusion is important to cells because it allows them to gain the useful substances they require to obtain energy and grow, and lets them get rid of waste products. This table shows examples of substances required by cell and associated waste products.
Learn more about diffusion:
https://brainly.com/question/20843145
#SPJ9
What do nucleic acids from our food get broken down into? What can these be used for?
Answer:
the nucleus can be broken down in to nutrients through the used of digestion.
research using transgenic animal models of neurodegenerative diseases not only helps scientists understand the disorders, but also may lead to
Research using transgenic animal models of neurodegenerative diseases not only helps scientists understand the disorders, but also may lead to aging.
Mammal genetic engineering is an expensive, time-consuming, and labor-intensive operation. The gene that genetic engineers want to put into the host organism must first be deleted, similar to other GMOs. This can be created synthetically or taken out of a cell that carries the gene. If the targeted gene or the donor organism's genome has been extensively studied, it may already be available from a genetic library. After then, additional genetic elements are added to the gene, often a selectable marker, a promoter and terminator region, or both.
The complete question is:
Research using transgenic animal models of neurodegenerative diseases not only helps scientists understand the disorders but also may lead to ______?
To learn more about transgenic animals click on the given link: brainly.com/question/25627558
#SPJ4
these glands have ducts and excrete their products onto the surface of the skin or into the lumen of hollow organs.
Exocrine glands have ducts and excrete their products onto the surface of the skin or into the lumen of hollow organs.
Exocrine glands are glands that secrete their products, such as hormones, enzymes, and mucus, onto the surface of the skin or into the lumen of hollow organs through ducts. These ducts transport the secretions from the glands to the target site, where they play important roles in maintaining the body's homeostasis and health. Examples of exocrine glands include sweat glands, salivary glands, and the glands in the digestive system that secrete digestive enzymes. In contrast, endocrine glands are glands that secrete their products, such as hormones, directly into the bloodstream, where they can be carried to target hollow organ cells and tissues throughout the body. The endocrine system works in conjunction with the nervous system to regulate the body's functions and maintain its homeostasis.
Learn more about hollow organs here:
https://brainly.com/question/1301521
#SPJ4
T/F. Despite their adaptations to land, most species of plant are still aquatic.
Despite their adaptations to land, most species of plant are still aquatic. This statement is False.
The transition from an aquatic to a terrestrial environment occurred as a result of a variety of particular adaptations to the aforementioned barriers to land survival. In truth, modern terrestrial plants contain a variety of adaptations to life on land, but they did not evolve all at once. Furthermore, distinct adaptations are present in different plant lineages. The adaptations and features that ARE found in (almost) all land plants.
Aphotic zones can be found in marine habitats such as lakes and oceans. Aphotic zones are areas of water with little or no sunshine. It is found in bodies of water whose depths receive less than 1% of sunshine penetration.
Hence, Despite their adaptations to land, most species of plant are still aquatic. This statement is False.
To learn more about Aquatic Please click on the given link:
https://brainly.com/question/1023703
#SPJ4
Describe the path that air takes through the respiratory system beginning at the mouth and ending at the lungs in own words
Air enters the respiratory system through the mouth and travels down the throat, passing through the pharynx and larynx before entering the trachea.
From the trachea, the air travels through two bronchi (one leading to each lung) and then through progressively smaller bronchioles. Finally, the air reaches the alveoli, which are small sacs in the lungs where gas exchange takes place. Oxygen in the air diffuses across the walls of the alveoli and into the bloodstream, while carbon dioxide in the bloodstream diffuses across the alveolar walls and into the air, which is then exhaled.
Overall, the path that air takes through the respiratory system is a complex and highly coordinated process that allows the body to obtain the oxygen it needs and remove carbon dioxide waste products.
To know more about respiratory system here
https://brainly.com/question/4190530
#SPJ4
Which group is correctly paired with its description? a) diplomonads-protists with modified mitochondria b) apicomplexans-producers with intricate life cycles c) Radiolarians - named for their porous calcium carbonate shells, called tests d) diatoms-important consumers in aquatic communities
The correct answer is (b) apicomplexans, which are organisms that develop complex life cycles.
The single-celled protists known as apicomplexans are producers, which means they create their own food through photosynthesis. They are most typically found in aquatic habitats and have a complex life cycle with numerous phases involving various types of hosts.
They are well known for spreading illnesses including malaria, toxoplasmosis, and cryptosporidiosis that affect people.
The apicomplexan cell is extensively modified and has a variety of organelles involved in movement, nutrition, and the manufacture of infectious agents, including plastids, which are not generally seen in other single-celled organisms.
To learn more about apicomplexans visit:
https://brainly.com/question/14695038
#SPJ4
Can I have help please
Answer:
Nicotine
Tar
Carbon Monoxide
the acquisition of chemical substances by organisms for the building blocks of cellular components and processes is
The acquisition of chemical substances by organisms for the building blocks of cellular components and processes is called nutrient acquisition.
Nutrient acquisition is a fundamental process for all living organisms, as they require nutrients to carry out essential biological functions such as growth, maintenance, and reproduction. The specific nutrients required vary among organisms, but generally include elements such as carbon, nitrogen, phosphorus, sulfur, and various minerals and vitamins.
Nutrient acquisition occurs through a variety of processes, depending on the type of organism and the specific nutrient being acquired. For example, plants obtain nutrients through their roots by absorbing water and dissolved minerals from the soil, while animals obtain nutrients through ingestion of food and absorption through the digestive tract.
Regardless of the specific mechanism, nutrient acquisition is a critical process for all organisms, is essential for the overall survival and function of the organism.
Learn more about Nutrient acquisition here:
https://brainly.com/question/28481623
#SPJ4
Place the labels on the figure to designate the correct developmental sequence of erythrocytes.a. Hemocytoblastb. Proerythroblastc. Early erythroblastd. Late erythroblaste. Normoblastf. Reticulocyte
The stages for the erythrocyte are rubriblast, prorubriblast, lubricate, and metarubricye. At long last, the stages can likewise be named by the advancement of the normoblast stage. The correct option(G).
This gives the stages of pronormoblast, early normoblast, middle-of-the-road normoblast, late normoblast, and polychromatic cell.
Seven cell lines emerge from hemocytoblast, which by the activity of development factors form antecedents of the different platelets. From hemocytoblast, proerythroblast, myeloblast, lymphoblast, monoblast, and megakaryoblast are shaped.
Red platelets are minuscule and have the state of a level circle or donut, which is round with a space in the middle, however, it isn't empty. Red platelets don't have a core like white platelets, permitting them to change shape and move all through your body more straightforwardly.
To learn more about erythrocytes here
https://brainly.com/question/12529813
#SPJ4
Q-Place the labels on the figure to designate the correct developmental sequence of erythrocytes.
A. Hemocytoblast
B. Proerythroblast
C. Early erythroblast
D. Late erythroblast
E. Normoblast
F. Reticulocyte
G. Erythrocyte
Which is the correct order of the steps in a generalized signal transduction pathway?Signal molecule binds to receptorMolecules within cell transduce signalCell responds
The correct order of the steps in a generalized signal transduction pathway is b. signal molecule binds to receptor; molecules within the cell transduce the signal; cell responds
This is a typical sequence of events in a signal transduction pathway, where an extracellular signal molecule binds to a receptor on the cell membrane, triggering a cascade of intracellular events that eventually leads to a response in the cell. The signal molecule first binds to the extracellular region of the receptor, then the signal is transmitted across the cell membrane, and the signal is then transduced to the nucleus where it can alter gene expression.
Know more about signal transduction here: https://brainly.com/question/13989766
#SPJ4
(complete question)
Which is the correct order of the steps in a generalized signal transduction pathway?
a. signal molecule is secreted by a nearby cell; signal molecule enters the cell; signal activates receptor
b. signal molecule binds to receptor; molecules within the cell transduce the signal; cell responds
c. Signal molecule enters the nucleus; signal molecule binds to DNA; transcription of specific genes occurs
d. Signal molecule activates a target cell; target cell binds to a receptor; receptor is activated
e. Signal molecule binds to the extracellular region of the receptor; signal molecule diffuses through cell membrane; signal is transduced to the nucleus where specific genes are turned on or off.
Life as we know it cannot flourish on the moon but it might be possible for it to survive. What life form on Earth might survive on the moon?
bacterial endospores
The tardigrade, commonly referred to as the water bear, is one such organism. Tardigrades are tiny invertebrates that can endure a range of harsh environments, such as intense radiation, sweltering heat, and vacuum.
The only life form that might possibly exist on the moon is the tardigrade (or anywhere else in the void of empty space). It has been found all over the world, and this microscopic organism sometimes referred to as the "water bear," has shown to be extraordinarily resistant to pressure and temperature extremes as well as the capacity to thrive without water. The only living creature that has been shown to be able to survive in the harsh conditions of space, which include tremendous pressure, extremely low temperatures, and powerful solar radiation, is this one.
The moon cannot host life because it lacks an atmosphere and has dormant geology. The meager gravity of the moon would also make it difficult for any molecules to stay in place.
To learn more about Tardigrade please click on the given link: https://brainly.com/question/19165217
#SPJ4
the collection of microorganisms that live on or on a human host in a mutually beneficial way is called the human ______.
The Human Microbiome is a group of microorganisms that coexist with a human host in a mutually beneficial way.
The genetic makeup of all the bacteria, fungi, protozoa, and viruses that inhabit and live inside the human body is known as the Human microbiome. The total number of genes in the microbes that make up an individual's microbiome is 200 times greater than those in the human genome. The microbiome could be up to five pounds heavy. The bacteria, archaea, viruses, and eukaryotes that live inside and outside of our bodies make up the human microbiome. These microorganisms have an effect on human physiology in both health and disease, improving or impairing metabolic and immune processes.
Important homeostatic mechanisms in the body are controlled in part by the human microbiome. Improved metabolism, immunity to infection and inflammation, protection from autoimmune disease, and a positive impact on the gut-brain axis are a few of these. Short-chain fatty acid, or SCFA. These microbes play a crucial role in how your body works. They actually outnumber your genes 100 to one! Your microbiome is made up of these microorganisms . They have an impact on your metabolism, immune system, mood, cognitive function, and even how you age.
To learn more about human microbiome click here:
https://brainly.com/question/28436132
#SPJ4
The above question is incomplete. Check complete question below -
The collection of microorganisms that live on or on a human host in a mutually beneficial way is called the Human __.
A. Microbiome
B. Colony
C. Parasite
D. Infections
URGENT What happens in osmoregulation when there’s too much water and not enough sodium in your body?
Answer:
If there is too much water and not enough sodium in the body, it leads to a condition known as hyponatremia. This occurs when the concentration of sodium in the blood is too low. The body needs to maintain a balance between water and sodium, as an imbalance in this concentration can cause cells to swell or shrink, leading to potentially serious consequences.
In response to hyponatremia, the body will try to maintain a proper balance by increasing the concentration of sodium in the blood. This is achieved through the release of hormones such as antidiuretic hormone (ADH) and aldosterone, which regulate the amount of water and sodium in the body. ADH increases water reabsorption in the kidneys, while aldosterone stimulates the reabsorption of sodium ions.
Explanation:
If left untreated, hyponatremia can lead to serious health problems such as seizures, coma, and even death. It is important to maintain proper hydration and electrolyte balance by consuming enough fluids and electrolytes, such as sodium and potassium, in the diet.
tell me if you kinda confuse
ALLEN
Answer:
hyponatremia
Explanation:
zidovudine was the first antiviral drug approved to fight the hiv virus. zidovudine works by interfering with the reverse transcription of viral genetic material. in the diagram, the numbers represent the different stages of viral replication. at which stage does zidovudine work?
An anti-HIV medication called zidovudine lowers the level of the virus in the body. Anti-HIV medications like zidovudine decrease immune system deterioration and stop the development of AIDS-related diseases.
What are antiviral tablets used for?Antiviral medications are a particular class of medication used to treat viral infections. They work by eradicating or stopping the spread of viruses. Oseltamivir and zanamivir, two antiviral medications, are used to treat the flu (Relenza). One of these might have been recommended to you by someone.
What was the first antiviral drug?The COVID antiviral treatments are really only available to patients at highest risk of contracting serious COVID-19 illness, such as people older than 65 and those who have other medical diseases such as cancer, as well as diabetes that make them more susceptible to severe illness. The first anti - viral, idoxuridine, has been approved in 1963 for applied topically of a herpes simplex virus (HSV).
To know more about Antiviral Drug visit:
https://brainly.com/question/29821745
#SPJ4
How do chromosomes in most cells of an organism such as the leaf calles of a plant compare to the chromosomes in its reproductive cells which are spread and egg cells
The number of chromosomes in an organism's vegetative cells is typically twice that of its reproductive cells.
The number of chromosomes in normal organisms is diploid (2n). The number of chromosomes found in other non-reproductive portions of animals is often divided in half by the number of sex cells, such as sperm and egg cells. In sexual reproduction, sex cells like sperm and egg cells are involved. They are therefore also called as gametes.
The sperm cell with its haploid (n) chromosome number and the egg cell with its haploid (n) chromosome number combine during fertilization to create a zygote (2n) with a full set of chromosomes. The ensuing zygotes following fertilization will not have the typical number of organisms' chromosomes if the sex cells do not contain half of the typical diploid chromosome.
To know more about sexual reproduction
brainly.com/question/7464705
#SPJ4
solutions among african-americans, the frequency of sickle-cell anemia (which, as you will recall is a homozygous recessive condition) is about 0.0025. what is the frequency of heterozygotes? when on african-american marries another, what is the probability that both will be heterozygotes? if both are heterozygotes, what is the probability that their first child will have sickle-cell anemia?
If the frequency of sickle-cell anemia in African-Americans is 0.0025, then we can calculate the frequency of the recessive allele (s) using the Hardy-Weinberg equation: [tex]p^{2}[/tex] + 2pq + [tex]q^{2}[/tex] = 1
where p and q are the frequencies of the dominant (HbA) and
recessive (s) alleles, respectively. Since sickle-cell anemia is a homozygous recessive condition, [tex]q^{2}[/tex] represents the frequency of affected individuals (0.0025), so:
[tex]q^{2}[/tex] = 0.0025
q = sqrt(0.0025) = 0.05
The frequency of the HbA allele can be calculated as:
p = 1 - q = 1 - 0.05 = 0.95
To calculate the frequency of heterozygotes (HbAS), we use the 2pq term of the Hardy-Weinberg equation:
2pq = 2 x 0.95 x 0.05 = 0.095
So the frequency of HbAS is 0.095, or about 1 in 11 African-Americans.
When an African-American marries another, the probability that both will be heterozygotes (HbAS) can be calculated using the product rule of probability:
P(HbAS for individual 1) x P(HbAS for individual 2) = 0.095 x 0.095 = 0.009025
So the probability that both individuals are HbAS is 0.009025, or about 1 in 111.
If both individuals are HbAS, the probability that their first child will have sickle-cell anemia (HbSS) is 1 in 4, or 0.25. This is because each parent has a 1 in 2 chance of passing on the recessive allele, and the child must inherit two copies of the recessive allele to have the condition. The probability that the child will be HbAS is also 1 in 2, and the probability that the child will be HbAA (without the sickle-cell allele) is also 1 in 2.
Learn more about recessive allele here:
https://brainly.com/question/18075358
#SPJ4
Many of the changes that accompany menopause are caused by the drop in the circulating levels of __________.
a. FSH b. GnRH c. estrogen d. LH
Many of the changes that accompany menopause are caused by the drop in the circulating levels of estrogen. Progesterone and estrogen production both decline concurrently. The majority of menopause symptoms are brought on by the significant decline in estrogen levels.
A woman's menstrual periods end permanently and her ability to become pregnant when she approaches menopause, also known as the climacteric. Menopause can begin at any age, although it frequently occurs between the ages of 45 and 55. When a woman has gone a full year without getting her period, it is commonly said that menopause has started. It could also be defined by a decrease in the hormone production of the ovaries. Women who have had surgery to remove their uterus but still have healthy ovaries are not considered to have experienced menopause. After uterus excision, menopause symptoms typically manifest earlier.
To learn more about menopause click on the given link: brainly.com/question/3256449
#SPJ4
Structures that have different mature forms but develop from the same embryonic tissue are a. vestigial organs. b. adaptations. c. homologous structures. d. fossils.
Homologous structures are defined as those that originate from the same embryonic tissues but take on different mature forms.
What is the composition of species with potentially the same origin but various functions?Homologous structures are comparable physical characteristics found in creatures with a shared ancestry, but the characteristics have entirely different biological purposes. Human, feline, whale, and bat limbs are examples of homologous structures.
These structures, whether they be an arm, leg, flipper, or wing, are all supported by the same bone structure.
Divergent evolutionary processes give rise to homologies. Divergent evolution is the process through which animals with a shared ancestor develop and acquire distinctions, frequently culminating in the emergence of new species. This could happen as a result of stressors such changes in abiotic or biotic components in the environment.
To know more about embryonic tissue visit:
https://brainly.com/question/30664595
#SPJ4
