A scientist estimates the heritability of tail length in a population of mice in Utah and...

A scientist estimates the heritability of tail length in a population of mice in Utah and another population in Iowa. In Utah, the mean tail length is 3 cm. with a heritability of 0.98. In Iowa the mean tail length is 2.5 cm with a heritability of 0.99. what explains the difference between these two populations in mean tail length?

a. environmental differences between the populations

b. genetic differences between the populations

c. both environmental and genetic differences between the populations

d. can't tell from the information given

Expert Solution

The difference between the two populations in mean length is dependent on both environmental and genetic differences between the population.

It is because heritability is the extent of variation that can be observed in a particular trait (in this case mean tail length) due to inherited genetic factors. But , as the two populations were living at two different habitats, difference in environment will also play a contribution in creating this difference.

Hence, the correct option is (c)

About the incorrect options-

For a) and b), Not alone they have a contribution; they together are responsible for creating the difference.

For d) The information given is optimum, and the reason for the difference is already been stated.

Hope it helps, Good luck !!!!
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gladiator answered 2 years ago

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