Question

what is genetic drift?how does it produce founder effect?

Answer 1

The elimination of genes of certain traits from the small population when a section of the species population dies of natural calamity or migrates to other region is called genetic drift. Genetic drift can cause big losses of genetic variation for small populations.

A founder effect occurs when a new colony is started by a few members of the original population. This small population size means that the colony may have:

• Reduced genetic variation from the original population.
• A non-random sample of the genes in the original population.