In a random mating population in equilibrium, which of the following brings about a change in gene frequency in non-directional manner?
Selection
Migration
Mutation
Random drift
In a certain population, the frequency of three genotypes is as follows
Genotypes : | $BB$ | $Bb$ | $bb$ |
frequency : | $22\%$ | $62\%$ | $16\%$ |
What is the likely frequency of $B$ and $b$ alleles ?
Darwin's theory of natural selection to explain organic evolution was based on
Name the type of natural selection depicted in the given diagram (type $I,$ type $II$ and type $III$)
$[Image]$
Type $I$ Type $II$ Type $III$
Random unidirectional change in allele frequencies that occurs by chance in all populations and especially in small populations is known as
In Hardy-Weinberg principle expression of allele frequency is represented by