Q.Which one of the following is a living fossil?
(a) Highly genetically variable individuals
(b) Constant low mutation rate
(c) Large population size
(d) Interbreeding within small isolated population
Solution :
Correct option : D Genetic drift is also called as allelic drift. It is the change in the frequency of a gene variant in a population due to random sampling. Interbreeding is the act of mixing different species or varieties of animals or plants and thus to produce hybrids. This hybrid act as a major source of genetic drift.