Question

What is the role of natural selection in affecting Hardy-Weinberg equilibrium?

Options

• It increases genetic diversity without changing frequencies

• It eliminates only recessive alleles from populations

• It maintains constant allele frequencies in all populations

• It alters allele frequencies by favouring heritable variations that improve survival and reproduction

Answer 1

Natural selection alters allele frequencies by favoring heritable variations that improve survival and reproduction. When some alleles are associated with greater fitness, their frequencies increase in the population, causing departure from Hardy-Weinberg equilibrium.