Quiz 2

Question 1

A number of mechanisms operate to maintain genetic diversity in a population. Why is such diversity favored?

Answer 1

Genetic diversity may better adapt a population to inevitable changes in the environment.

Question 2

In the Hardy-Weinberg equation:

p2 + 2pq + q2

2pq represents the frequency of ______________________ in the population?

Answer 2

Heterozygotes

Question 3

Albinism is an autosomal recessive trait in humans. Assume that there are 100 albinos (aa) in a population of 1 million. How many individuals would be expected to be homozygous normal (AA) under equilibrium conditions?

Answer 3

980,100

Question 4

Genetic drift:
A. will always lead to higher fitness of individuals in the population
B. reduces genetic variation within a population
C. can lead to divergence between populations
D. B and C are correct

Answer 4

D.) B and C are correct

Question 5

(T/F) Gene flow is an example of an adaptive evolutionary mechanism.

Answer 5

False. it is non-adaptive/non-selective

Question 6

(T/F) Natural populations choose to adapt to their environment by way of natural selection.

Answer 6

False

Question 7

(T/F) Having a phenotype (with a heritable genetic basis) that makes you fitter in one environment will not necessarily make you fitter in every environment.

Answer 7

True