LIFE SCIENCE

Detailed explanation-1: -Geographical Isolation (allopatry) The proximity of the various islands has permitted enough migration of Darwin’s finches between them to enable distinct island populations to arise. But the distances between the islands is great enough to limit interbreeding between populations on different islands.

Detailed explanation-2: -Genetic Drift Example Consider a population of rabbits with brown fur and white fur, white fur being the dominant allele. Due to genetic drift, only the brown population might remain, with all the white ones eliminated. A couple with brown and blue eyes has children with brown or blue eyes.

Detailed explanation-3: -An organism develops different courtship rituals which do not attract main population this would lead speciation. Orcas occur in the same habitat but some are avoiding each other and do not interbreed. They have different diets, vocal behavior, and social structures.

Detailed explanation-4: -In essence, different populations find different genetic solutions to the same selective problem. In turn, the different genetic solutions (i.e., mutations) are incompatible with one another, causing reproductive isolation.