Question

Dentify the first step in allopatric speciation from the given options?

• A. Genetic drift
• B. Geographical isolation
• C. Polyploidy
• D. Hybridization

Answer 1

The correct option is B

Geographical isolation

Allopatric speciation (from the ancient Greek allos, "other" + Greek patris, "fatherland") or geographic speciation is speciation that occurs when biological populations of the same species become vicariant, or isolated from each other to an extent that prevents or interferes with genetic interchange. Allopatric speciation may occur when a species is subdivided into geographically isolated populations.