Chapter 20. Genetic Drift Simulation

Which statement can be made about genetic drift?

What feature of a population makes it vulnerable to genetic drift?

A lizard population has three alleles for a particular gene—X1, X2, and X3. Two of these alleles are neutral (X1 and X2) and the third is deleterious (X3). In which of the following scenarios would you say that genetic drift is definitely operating?

Four different populations of an owl species were studied. Data were collected on population sizes and the frequencies of alleles for one gene. The gene is not known to be under any selective pressures. If genetic drift is the only mechanism operating to change these allele frequencies over time, which population can be expected to show the greatest change and which can be expected to show the least change over time?