Question

The existence within a population of nonbeneficial allele in heterozygous genotype is :-
(1) genetic drift
(2) genetic flow
(3) selection
(4) genetic load

Answer 1

The concept of genetic load comes from Haldane (1949) and Muller (1950). It attempts to put some objectivity into the idea that populations have a mixture of genotypes, some of which are 'better' than others. To the extent that there is a 'best' genotype, any genotypes other than the best will be part of the genetic load in the population. Thus, the correct answer is 4