In the following list, select the factors that would NOT be considered genetic drift.
Answer
A. In a small population with very few people of type B blood, a mother that is heterozygous for type B blood has 6 offspring but none ever get her type B allele.
B. In a small population, the male that is the best hunter gets access to more females and leaves more offspring in the next generation.
C. A small number of organisms from a larger population get separated from the main group during a flood and end up starting a new group on the opposite side of the river from their old population.
D. Two small groups decide to join together to form a larger group to enhance their chance of survival after a catastrophic event.
E. An earthquake kills 60% of a population and the majority of the population's food supply causing another 10% of the population, mostly newborn children, to die of starvation in the 6 months following the earthquake.
F. In a small population that settled on an island, one adult has a neutral genetic abnormality of a cleft palate. After 6 generations, the island poluation is about the same as when it started but 30% of the population now have the condition of cleft palate