Questions and Answers

Figure 1 compares two models of speciation, A and B. Which of the following best explains how the ecological conditions are likely to be different in the two models?
a) In model A the ecological conditions remain unchanged for long periods of time and then change drastically; in model B the ecological conditions change drastically from generation to generation.
b) In model A the ecological conditions remain unchanged; in model B the ecological conditions change gradually over long periods of time.
c) In model A the ecological conditions are changing drastically from generation to generation; in model B the ecological conditions remain unchanged.
d) In model A the ecological conditions change gradually over a long period of time; in model B the ecological conditions remain unchanged for long periods of time and then change drastically.

Assuming that the population was in Hardy-Weinberg equilibrium for the G locus, what percentage of moths in the natural population was white in 1962?
a) 2%
b) 4%
c) 8%
d) 20%
e) 64%