Which one of the following factors does not affect Hardy-Weinberg equilibrium?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → Panspermia
The Hardy-Weinberg principle says that allele frequencies in a population stay constant from generation to generation. Five factors disturb this equilibrium: gene migration, genetic drift, mutation, genetic recombination and natural selection.
(1) Gene migration — A factor that affects Hardy-Weinberg equilibrium. Moving of a group to another place changes the gene frequencies in both populations.
(2) Genetic drift — A factor that affects Hardy-Weinberg equilibrium. It is a change in allele frequency by chance.
(3) Panspermia — Not a factor that affects Hardy-Weinberg equilibrium. It is an old idea that life came to the earth from outer space. It is about the origin of life and has nothing to do with allele frequencies.
(4) Mutations — A factor that affects Hardy-Weinberg equilibrium. A mutation changes an allele and so changes the allele frequency.
NCERT Extract:
Hardy-Weinberg Principle – …
