Question

which scenario describes an example of gene flow?
in a population of rabbits, some individuals have spotted fur, which makes them more susceptible to predation. the proportion of rabbits that have spots decreases in the population for several generations.
a mistake during dna replication causes the offspring of a yellow flowering plant to have blue flowers. the blue flower trait is passed on to successive generations.
some of the rare, red - winged finches from a small island fly to a nearby island to feed. they mate with the native brown - winged finches, which results in an increase in the red - wing allele frequency on the new island.
cheetahs almost went extinct approximately 10,000 years ago during a mass die off of large mammalian species. very few cheetahs survived, leaving the population with little genetic diversity.

Explanation:

Gene flow is the transfer of genetic material between populations. The scenario of red-winged finches moving to a new island and mating with native finches, altering allele frequency, directly exemplifies this process. The other options describe natural selection (spotted rabbits), mutation (blue flower), and bottleneck effect (cheetahs), not gene flow.

Answer:

Some of the rare, red-winged finches from a small island fly to a nearby island to feed. They mate with the native brown-winged finches, which results in an increase in the red-wing allele frequency on the new island.