11. Two hypothetical populations of rabbits live on a mountain, one at low elevation and the...

11. Two hypothetical populations of rabbits live on a mountain, one at low elevation and the other at high elevation. Rabbits at the low elevation experience a mild climate and have short fur, whereas rabbits at the high elevation are exposed to cold conditions and have long fur. There are no geographic barriers separating the ranges of two populations.

An ecologist finds that in both the low and high elevation populations, there are a few rabbits that have intermediate fur length. She notes that the rabbits with intermediate fur length can successfully mate and produce offspring with rabbits that have short or long fur.

What is the most likely explanation for why some rabbits have intermediate fur length?

A) The rabbits with intermediate fur length are a seperate species.

B) The population at low elevation is experiencing genetic drift.

C) The rabbits with intermediate fur length live in a different area and are migrating through the two populations.

D) There is a gene flow between the low and high elevation populations.

Expert Solution

Right option is D

because there will be migration occur between two population of rat which will lead to flow of gene between high and low elevation's population and when interbreed together and can produce short or long fur.

The two population of rabbit are evolved in such a way that they can survive in these climatic condition. This allow selection in rabbit for long fur at high elevation and short fur selection in low elevation population of rabbit.

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Why other option wrong:.

*The two population of short and long fur can interbreed together. That's why these two population of rat are belong to single species.

* There is no genetic drift occurs in the population because if there is genetic drift occurs then only one kind of rabbit are found either long, short or intermediate fur. But in this question, there are intermediate fur rabbit also found with short or long fur.

* As given in question that rabbit with intermediate fur length are found in same area.

gladiator answered 1 year ago

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