Please help!!! Thank you!!!!

Please Help!!! Thank You!!!!
Please Help!!! Thank You!!!!
Please Help!!! Thank You!!!!

Answers

Answer 1

Answer:

natural selection ; homologous

The population of birds with large beaks will increase on the island (1st listed) ; The trait for large beaks will be passed on to future generations through natural selection. (3rd listed)

B) 80 /200

Explanation:

Giraffes evolved over many generations to have long necks. Giraffes that had longer necks were more likely to survive than giraffes with shorter necks because they had better access to food. This is an example of natural selection / survival of the fittest.

(the "fittest" [most beneficial/practical] trait is surviving and getting "selected" by nature)

Giraffes are also vertebrates, like humans. In fact, despite their different neck sizes, humans and giraffes have exactly seven vertebrae bones in their neck. This similarity suggests human and giraffe necks are homologous [structures]

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...' What are two ways the decrease in seed availability will affect the population of birds on the island?'

The population of birds with large beaks will increase on the island.

  [This is the concept of natural selection / survival of the fittest, they have the most abundant resource [because they are able to eat what is abundant on the island, compared to smaller birds that have a larger decrease in food availability]   ]

The trait for large beaks will be passed on to future generations through natural selection.

[If these birds / and this trait survive, they will be able to have offspring [future generations]. Birds with a low survival percentage will be less successful in mating, and will likely not produce the same quantity of offspring that will carry on their traits to future generations.]

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frequency of an allele:

population: 100

frequency recessive [homozygous bc 2 same recessive alleles]: 25 (tt)

frequency dominant homozygous: 45 (TT)

frequency heterozygous dominant: 30 (Tt)

total alleles: 100 [our population] times 2

100 · 2 = 200

total alleles: 200

number of times we have [dominant] T:

30 from each heterozygous dominant (Tt)

2 · 45 (TT has two T's) = 90 from homozygous dominant

30 + 90 = 120

number of times we have [recessive] t :

30 from each heterozygous dominant (Tt)

2 · 25 (tt has two t's) = 50 from each homozygous recessive

30 + 50 = 80

So, we know that the frequency of recessive allele [t] is 80 / 200

[80 out of 200]

So, option B) 80 / 200 is correct

(this = 0.4)

(and dominant [T] is 120 / 200; I say this to show that recessive frequency and dominant frequency are calculated the same way!!)

(this = 0.6)

hope this helps!! (this took me a long time to write so please do read it thoroughly!!)

Answer 2

Answer:

your answer was so worth waiting!!!!!

Explanation:


Related Questions

are high trochanters and high hips the same?

Answers

Answer:

no it's not same

Explanation:

are high trochanters and high hips the same?

Which strategy is used to assess blood pressure, skin conductance, papillary dilations, and erectile responses?

Answers

The strategy used to assess blood pressure among other parameters is; Choice C; Psychophysiological techniques.

Which strategy is used to assess blood pressure, skin conductance, papillary dilations, and erectile responses?

In a bid to assess blood pressure, papillary dilations and other parameters, Psychophysiological technuques characterized by the study of the relationship between physiological signals recorded from the body and brain to mental processes and disorders. These biological signals in discuss are often generated by organ activity or by muscle activity

Remark;

A. Cognitive-functional analysis

B. self-monitoring procedures

C. Psychophysiological techniques

D. SIgnal detection strategy

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Where is the nucleus located in a neuron ?

Answers

The nucleus located in a neuron It is located in the cell body.

Which part of the neuron is its nucleus located?

Neurons have as basic parts the cell body, dendrites and axon. Cell body: The cell body is the region where the nucleus of the neuron is located, as well as most of its organelles.

in this case, the cell body, or perikaryon, is the portion of the neuron that contains the nucleus and the cytoplasm that surrounds the nucleus.

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Environmental degradation decrease the production. why

Answers

Environmental degradation decreases production because it obliterates the environment for the survival of plants and crop species by miscellaneous factors.

What is Environmental degradation?

Environmental degradation may be characterized as the deterioration of the environment through a deficiency of natural resources such as air, water, and soil. In other words, it may refer to the obliteration of ecosystems and the termination of wildlife.

It influences productivity by cutting down forests and trees, privileging their livestock to overgraze in fertile lands and devastate its productivity, utilization of harmful chemicals in agricultural practices, farming in marginal lands, etc.

Therefore, it is well described above.

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Identify the emergent properties of the human respiratory system

Answers

The human respiratory system is composed by nose and mouth and continues through the airways and lungs. Air enters the respiratory system through the nose and mouth, passing through the throat (pharynx) and voice box or larynx.

What is the importance of the respiratory system?

The respiratory system allows the exchange of gases with atmospheric air, ensuring the concentration of oxygen in the blood, necessary for the body's metabolic reactions, and on the other hand serving as a route for the elimination of residual gases, such as carbon dioxide.

In this case, we can see the multicellular organisms show emergent properties; these are properties that exist due to many different components working together.

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categorize the following events as part of g1, g0, g2, or s phase of interphase.

Answers

The events are categorized thus;

G1 phaseG0 phaseS phaseG2 phase

What are the sub-phases of Interphase?

The sub-stages of interphase is;

Gap 0 (G0) Phase: This is called a resting period. It lasts for a short time or long more permanent period. Gap 1 (G1) Phase: It is also called the first gap phase. Here, the cell starts growing, enlarges physically, copy of organelles and  produces all the necessary molecular building blocks such as RNA and proteins for the next phase are synthesized. S Phase: The cell produces a complete copy of DNA in the nucleus to produce two similar daughter cells. This stage is marked by DNA replication.Gap 2 (G2) phase: In this phase, the cell grows, produce proteins and organelles and the constituents of the cell are arranged in preparation for mitosis.

Therefore, the events are categorized thus;

G1 phaseG0 phaseS phaseG2 phase

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Which statement best describes ecological succession?
It is always caused by human intervention.
It occurs after disturbance
It never occurs in a predictable pattern.
It is a series of rapid changes in an ecosystem.

Answers

The answer is, it occurs after disturbance.

How can aids be transmitted from one person to another.

Answers

Answer:

Sexual Activicty

Explanation:

What is a scientific theory? Choose the best answer.
Select one:

An explanation that's thought up by a scientist

An explanation that's popular among the public

An explanation that makes a lot of sense.

An explanation that is backed up by evidence.

Answers

Answer:

an explanation that is backed up by evidence

Answer:

An explanation that is backed up by evidence.

Explanation:

Ribosomal subunits are large complexes composed of numerous polypeptides and at least one rrna molecule. Which subunits include three rrna molecules?.

Answers

Eukaryotic large ribosomal subunits include three rRNAs (28S, 5.8S, and 5S in mammals).

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Why is there competition in nature?
A. Living organisms are influenced by abiotic factors.
B. Ecosystems are composed of habitats and communities.
C. There are more living things than there are resources to support them.
D. Environments are constantly changing as organisms interact.

Answers

Answer:

c

Explanation:

Competition exists in nature due to the limited availability of resources compared to the abundance of living organisms. This creates a struggle for survival and dominance among species, leading to an ongoing process of natural selection. Thus, correct option is C.

Because there are more living things than there are resources to support them, competition is a natural phenomenon. There is a limited supply of food, water, shelter, and other survival-related essentials in the Earth's ecosystems. As a result, in order to meet their demands and ensure their survival, organisms must contend for these scarce resources.

This rivalry is essential to the process of natural selection because it increases the likelihood that organisms with beneficial characteristics or adaptations will survive and pass on their genes to the following generation. Because only those with the strongest adaptations flourish in a certain habitat, this eventually drives the evolution and specialization of species.

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how does catfish compare to the 4 groups of plants?​

Answers

se compara que el bagre es una gran cantidad de represas, ya sea en construcción o planificadas, amenazan la especie al bloquear el camino de migración natural del bagre, lo que podría causar su extinción. La represa Xayaburi, la cual ya se terminó de construir, representa la amenaza más cercana a la especie :)

During development, how many bones combine to form each of the coxal bones?.

Answers

Coxal bone is constructed up of a fusion of three bones: ilium, ischium, and pubis. Ilium- Ilium is the biggest part of the coxal bone.

Discuss the importance of legislation to protect marshes.

Answers

The role of the legislation is to make and pass laws that will be followed by the citizens of the nation.

In this capacity, the legislation may declare endangered marshes under the protection of the government and impose penalties to those who trespass on government lands.

How marshes area help in eliminating pollution?

1. Wetlands help in eliminating pollutants and thus helps in bioremediation.  

2. The wetlands assist in reducing the frequencies of erosion and floods. The wetlands function as a sponge and captivate the majority of the water at the time of heavy rainfall, which gets released gradually. This, in turn, helps in replenishing the groundwater level.  

3. Different kinds of species like insects, plants, reptiles, microbes, and reptiles thrive in wetlands, thus, forming a food web.  

4. Wetlands also donate to the economy of the country by providing timber, fish, rice, berries, and other things of medicinal values.  

Thus, this could be the answer.

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The diagram below shows some relationships between ecosystems near the
Sonoran and Chihuahuan Deserts. What kind of ecosystem is the thornscrub?
Temperate
Forest
Madrean
Woodland
(sporadically
Interior Chaparral)
Semidesert Grassland
Thornscrub
Desert
A. Badland
B. Shrubland
C. Wetland
D. Grassland
9000 feet
8000 feet
7000 feet
-6000 feet
-5000 feet
4000 feet
3000 feet
-2000 feet
1000 feet

Answers

Based on the ecosystems located near the Sonoran and Chihuahuan Deserts, an ecosystem which the thornscrub belongs to is: B. shrubland.

What is thornscrub?

Thornscrub can be defined as a transitional biome that exist between a tropical and desert forest. This ultimately implies that, thornscrub comprises grasses, geophytes, and herbs,

In this context, we can infer and logically deduce that an ecosystem which the thornscrub belongs to is shrubland because it's typically made up of a plant community.

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Specialised Plant cells are used to absorb water from the soil.

Explain how the structure of these specialised cells are adapted for its function.
(I need this to be slightly unprofessional,so please do not copy off a website,I also need this quick)

Answers

Answer:

The Roots have what are known as Root Hair Cells on their surface, these Root Hair Cells increase the Surface Area of the Root allowing a more efficient absorption of Water and Mineral Ions. Found within the cells is a large Vacuole. the role of any Vacuole is to hold the nutrients (mainly salts and sugars) needed for the cell to carry out its multiple functions. So, with this Vacuole being large, it allows more of these nutrients to be held for the Root.

The root hair cells have hair-like projections on each cell. It offers a larger surface area for absorption of water and mineral salts

What term describes a plant's response to external stimuli like light, gravity, and touch?

Answers

According to the research, a tropism is a plant's response to external stimuli like light, gravity, and touch.

What is a tropism?

It is the response that plants or certain organs of them make to a stimulus that comes from the outside.

There are different classes of tropisms according to the nature of the stimulus, gravitropism, phototropism, heliotropism among others.

Therefore, we can conclude that according to the research, a tropism is a plant's response to external stimuli like light, gravity, and touch.

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Why would it be hard to study the four major earth systems individually?

Answers

because all the systems are integral parts of the Earth, wherein all physical, chemical, and biological means are interrelated in these systems

Why did problems with low oxygen levels and increasing carbon dioxide levels develop in Biosphere?

Answers

The problem with low oxygen levels and increasing carbon dioxide levels develop in the Biosphere because the oxygen was absorbed by the population of microbes that are growing in an uncontrolled manner and some other concrete structures present in the Biosphere.

What is Biosphere?

A biosphere may be defined as the areas of the surface and atmosphere of the earth or another planet inhabited by living organisms. It may also be regarded as the zone of life on earth.

The amount of carbon dioxide directly depends on the amount of oxygen. If the oxygen level reduces, the level of carbon dioxide will definitely tend to increase.

The level of oxygen accounted as low in the biosphere due to the microbial respiration to a larger extent. And thereby, the level of carbon dioxide increases.

Therefore, it is well described above.

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Robert Hooke first observed cork under a microscope in jail so he named the small cubicles cells

False True

Answers

It is not true that Robert Hooke was in the jail while discovering cells.

Robert Hooke was observing cork through his microscope and saw tiny cubicles cells or boxlike cavitie which he later named as cells.

What is cell?

Cell can be defined as the smallest, functional, basic and structural unit of life.

However, biologists too categorize living organisms into two different groups based on the numbers of cells they posses. These are:

Unicellular organisms: These are organisms which is made up of only one cellMulticellular organisms: These are organisms made up of two or more cells

In conclusion, it is not true that Robert Hooke was in the jail while discovering cells. Rather, he was observing cork through his microscope and saw tiny cubicles cells or boxlike cavitie which he later named as cells.

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c. In what ways could you reduce your water usage if there was a water shortage?

Answers

We can reduce water usage by (a) turning off taps while brushing teeths (b) by taking shorter showers (c) by using water saving toilets (d) using less water in the garden and cleaning (e) only washing clothes when necessary

Which of the following phrases can be used to describe the genotype Ee?
A. Homozygous dominant
B. Heterozygous recessive
C. Heterozygous dominant
D. Homozygous recessive​

Answers

Answer:

C

Explanation:

one letter big and one small

the first letter is capital

What two issues did different groups of reagan supporters agree on during the 1980 election?

Answers

During the 1980 election, the two issues which different groups of Reagan supporters agreed on were:

A forceful foreign policy.A strong military.

Who is Reagan?

Ronald Wilson Reagan was an American politician born on the 6th of February, 1911 in Tampico, Illinois, United States of America. Also, Reagan was elected by American citizens to serve as the 40th president of the United States of America between 1981 and 1989.

During the 1980 election in the United States of America, the two issues which different groups of Ronald Wilson Reagan supporters agreed on include the following:

A forceful foreign policy.A strong military.

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why is modern view more convenient regarding mixing of blood in ventricle in frog??​

Answers

Answer:

Frogs are often used in dissection when demonstrating the organ systems of a complex organism. The presence and position of the organs found in a frog are similar enough to a person to be able to provide insights into the internal workings of the human body.

A student drew this model to show the gas exchange in the human body.


a diagram of the transport of oxygen and carbon dioxide around the body in the blood, from the lungs to the organs and again to the lungs

What are the strengths of the model the student created?

Answers

Answer:

gases

Explanation:

one strength would be that the graph clearly shows the gases and pathway of the gases which are taken in and used in exhalation.

2.how are the amino acids formed from the codon in mutation #2 different from those formed from the original codon pattern.

Answers

The codons are read on the amino acid table and the amino acid is determined.

Two amino acids  different from those formed from the original codon pattern are methionine and tryptophan.

How are amino acids formed from codons

The three-letter nature of codons means the four nucleotides found in mRNA

A stands for adenine

U stands for Uracil

G stands for guanine

C stands for cytosine

They produce a total of 64 different combinations but only 61 represent amino acids, the remaining three are STOP signals.

For instance, AUG is a codon that is read as methionine in the amino acid table.

Hence, the codons are read on the amino acid table and the amino acid is determined.

Two amino acids  different from those formed from the original codon pattern are methionine and tryptophan gotten from one single codon.

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How is the law of conservation of mass applied to ecology?

Answers

In ecology, the law of conservation of mass is applied by the principle of taking energy from the lower trophic levels and passing it to the higher trophic level by any means.

What is the law of conservation of mass?

The law of conservation of mass states that the actual mass in an ecosystem is neither created nor destroyed. Overall remains constant in a system.

In ecology, it illustrates that when an organism is ingested by other organisms, its mass is conserved. Some of the organisms may also be dependent on the waste products like urine and feces to make proteins and other compounds.  

Therefore, the energy or mass is neither lost in any form. It simply is taken by other organisms through any means.

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different between seed method and biological method of breeding
please help

Answers

Answer:

Plant breeding is the purposeful manipulation of plant species in order to create desired genotypes and phenotypes for specific purposes. Plant genetic is is the study of genes, genetic variation, and heredity specifically in plants.

The seed method involves selecting plants with desired traits and breeding them to produce offspring with those traits and the biological method involves using mutation breeding, tissue culture, and genetic engineering to create new plant varieties.

What is seed and biological methods of breeding?

The seed method and the biological method of breeding are two approaches that are used to develop new plant varieties.

The seed method involves selecting plants with desired traits and breeding them to produce offspring with those traits. This can be done through various techniques, such as crossbreeding, inbreeding, and hybridization. The seed method relies on the transfer of genetic material through the seed, and it is often used to develop new varieties of crops that are well suited to specific growing conditions.

The biological method of breeding involves using techniques such as mutation breeding, tissue culture, and genetic engineering to create new plant varieties. This approach involves altering the genetic makeup of plants in order to introduce new traits or to enhance existing ones. The biological method can be more precise and faster than the seed method, but it also involves more complex techniques and may be more expensive to implement.

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A forest fire burns down most of the trees in a large forest. The animals that live in the trees are forced to move to other areas. What kind of disturbance is this?

A. Cyclical
B. Small
C. Primary
D. Secondary

Answers

Answer: D. Secondary

Explanation:

An ecological disturbance is a circumstance caused by an agent that can be of biological or non-biological origin. The agent is capable of bringing negative changes to an ecosystem. Fire is an example of ecological disturbance. In the given situation, the forest burns down the trees are an example of the direct interaction of fire with the trees; therefore, it is a primary disturbance. Nevertheless, this interaction led to the loss of habitat of animals forced to move to other areas as the fire burned the trees. It is called secondary disturbance.

what is the relationship amount chromosomes, genes, and DNA​

Answers

Answer:

life

Explanation:

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