Genetic Drift Flashcards
1
Q
1.
A
Change in allele frequency happens by chance (not natural selection). More likely to occur in smaller populations.
2
Q
2.
A
A few individuals may produce more offspring than survive (by chance) especially when selection pressures are not strong.
3
Q
3.
A
Their alleles are passed on and increase in the population.
4
Q
4.
A
Genetic drift is more likely to occur in island populations and therefore there is more interbreeding.
5
Q
5.
A
This decreases the gene pool. As it is a small population, over generations only one allele of a gene may be present.