Question

*Need all answered

Language is one of the unique adaptations of Homo sapiens, likely associated with a rapid increase in brain size.

a) True

b) False

During allopatric speciation

a) The effect of gene flow decreases and the effect of local adaptation decreases

b) local adaptation decreases

c) the effect of gene flow decreases

d) the effect of gene flow decreases and the effect of genetic drift increases

e) the effect of genetic drift increases

Avise and colleagues' examination of mitochondrial DNA diversity among horseshoe crab species suggested that

a) evolutionary stasis cannot be explained on a case-by-case basis.

b) lack of genetic diversity may be responsible for observed evolutionary stasis in horseshoe crabs.

c) there is no evidence for evolutionary stasis in horseshoe crabs.

d) changing selection pressures may be responsible for observed evolutionary stasis in horseshoe crabs.

Answer 1

1. Correct answer:- (a) True
Explanation-Language is one of the unique adaptations of Homo sapiens, likely associated with a rapid increase in brain size.

2. Correct answer:- (d) the effect of gene flow decreases and the effect of genetic drift increases.
Explanation- Allopatric speciation, is speciation that occurs when biological populations of the same species become isolated due to geographical changes such as mountain building or social changes such as emigration.

3. Correct answer:-(b)lack of genetic diversity may be responsible for observed evolutionary stasis in horseshoe crabs.
Explanation-Avise and colleagues' examination of mitochondrial DNA diversity among horseshoe crab species suggested that lack of
genetic diversity may be responsible for observed evolutionary stasis in horseshoe crabs.