Natural selection requires genetic variation, competition for limited resources, overproduction of offspring, and unequal reproductive success. The subset of finches that is capable of eating large seeds, while many others eat small seeds, is an example of which requirement?

Answers

Answer 1

Answer:

Answer:

Genetic variation

Explanation:

Darwin studied that different populations of finches on Galapagos island that are descended from the same species. Some species are evolved to eat nuts and large seed, some eat small seeds and some feed on insects and nectar.

So genetic variation occurred in different populations of finches which enabled them to bring changes in their beak according to the food resource they have chosen to feed on.

So in Darwin's finches, genetic variation leads to new species which is a type of natural selection. Therefore subset of finches that can feed on large seeds and small seeds is an example of genetic variation.

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A change in genetic material is known as a type of selection.
True or False

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false it's Mutation
.......

What is the goal when using a dichotomous key?

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Dichotomous Key -

- Key used to identify a plant or animal in which each stage presents descriptions of two distinguishing characters, with a direction to another stage in the key, until the species is identified .

- There you go this should be the correct and explanatory way to explain what your asking HOPE THAT THIS HELPS .

To find the similarities and differences in organisms by using possible chromosome and physical characteristics.

A population of chimpanzees was separated when the forest that they lived in had a section cut down and a town was built. After a long period of time, the chimpanzees came back into contact but were incapable of breeding. Which of the following best describes the process that occurred?a. adaptation
b. speciation
c. convergent selection
d. stabilizing selection

Answers

Speciation occurs when a population suffers divergence. Genetic flow is interrupted between the new groups that keep reproducing and going through mutations. Reproductive isolation emerges. Option B. Speciation.

Speciation

Occurs when the original population is divided into two or more groups and each group is exposed to different environments.

Each group reproduces for many generations, going through many changes or mutations.

These changes will depend on each group's environment and its ecological pressures.

Pressures act on individuals and make them adapt to the new environmental conditions.

Generation after generation, the genotype of individuals will increase the fitness to survive and reproduce.

The fixation of mutations will increase the difference among both groups, up to the diverging point into two new species.

Allopatric speciation

There are different types of speciation. One of them is Allopatric speciation.

Allopatric speciation refers to the geographical separation of a continuous genetic population, originating two or more new geographicallyisolated groups.

During these events of speciation, emerging new barriers impede genetic flow between groups. The two new populations that are separated can not get together and mate anymore.

These barriers might be geographical or ecological.

After the emergence of the barrier, the two populations evolved separately in different new species.

Two different species that evolved in allopatry might meet again in secondary contact if the barrier that separated them, disappears. However, they will not be able to mate and reproduce due to prezygotic and postzygotic reproductiveisolation.

The exposed example is a case of speciation, in which the chimpanzees' habitat was fragmented and a town was built.

The town acts as the barrier between the two diverged groups, impeding them to meet.

Genetic flow is interrupted and each group keeps reproducing separately, and mutating, leading to genetic changes and reproductive isolation.

After a long period of time, the chimpanzees came back into contact but were incapable of breeding.

This process is speciation. Option B.

You can learn more about speciation at

brainly.com/question/13177799

The definition of a biological species is that they will only breed with members of their own species. If the two populations of chimps will no longer interbreed, then they are considered separate species = speciation.

B. Speciation

Which of the following might be affected by the loss of a plant species?

Answers

the entire food chain could be affected because the grasshoppers have nothing to eat then the birds have nothing to eat cause the grasshoppers have nothing to eat and so on

Which is a biotic factor that affects the size of a population in a specific ecosystem?a. average temperature of the ecosystem
b. type of soil in the ecosystem
c. number and kinds of predators in the ecosystem
d. concentration of oxygen in the ecosystem

Answers

A biotic factor that affects the size of a population in a specific ecosystem is: c. number and kinds of predators in the ecosystem.

An ecosystem can be defined as a biological community that comprises all living organisms (biotic factors) and the physical environment (abiotic factors) with which they interact.

Basically, some of the essential services that are provided by an ecosystem for the sustenance of life include;

Nutrient cycling

Water purification

Plant pollination

A biotic factor refers to the living organisms that are existing within an ecosystem and their effect on the population living within it. Thus, the number and kinds of predators living in an ecosystem is a biotic factor that would affect the size of its population.

In conclusion, all the other answer options are abiotic factors.

The answer is C. Numbers and kinds of predators in the ecosystem because biotic means living organisms and it's the population that can effect the ecosystem, so the ecosystem can be effected by the number of predators (living organisms) in the ecosystem.

What are the differences between DNA and RNA in terms of structure, function, and location?

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Answer:

There are two differences that distinguish DNA from RNA: (a) RNA contains the sugar ribose, while DNA contains the slightly different sugar deoxyribose (a type of ribose that lacks one oxygen atom), and (b) RNA has the nucleobase uracil while DNA contains thymine.

Explanation:

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