The number of generations it takes for an allele to become fixed or lost in a population depends on population size. There are three populations associated with the frequency of the ? allele and its change in frequency. Which population(s) show dramatic change in ? allele frequency and what are these changes? Population 1 = brown mouse (top line); Population 2 = middle line; population 3 =

Question

white mouse (bottom line).







A. Population 1; it shows an extinction of the ? allele resulting in all brown mice.

B. Population 3; it shows an extinction of the ? allele resulting in all white mice.

C. Population 2; it shows an increase in the frequency of the ? allele after 50 generations.

D. Population 1; it shows a fixation of the ? allele resulting in all brown mice and Population 3 shows an extinction of the ? allele resulting in all white mice.

E. Population 1, 2, and 3 all show drastic changes in ? allele frequency after 50 generations, with the complete elimination of the ? allele in all three populations.

Answer 1

D. Population 1; it shows a fixation of the ? allele resulting in all brown mice and Population 3 shows an extinction of the ? allele resulting in all white mice.