NEET BIOLOGY

Detailed explanation-1: -The founder effect is one form of genetic drift. This is the phenomenon in which there is a derivation of a new population from a small isolated group of individuals. The new population is genetically different from the parent populations. Pitcairn island is a group of volcanic islands.

Detailed explanation-2: -The correct answer is: The founder effect.

Detailed explanation-3: -Founder effect – a small number of individual colonize a new habitat. The allele frequencies of the new population will reflect the alleles of the founders, not the original population they came from.

Detailed explanation-4: -A founder effect, as related to genetics, refers to the reduction in genomic variability that occurs when a small group of individuals becomes separated from a larger population.

Detailed explanation-5: -The founder effect is another extreme example of drift, one that occurs when a small group of individuals breaks off from a larger population to establish a colony.