Tick the incorrect option among the following?
Genetic drift is an accidental evolutionary shift.
It happens as a result of environmental factors.
The allele frequency of the genes is relatively unstable in large populations
Both (b) and (c)
Genetic drift is an accidental evolutionary shift in the allelic frequencies of a population. Although it only occurs in very small numbers, it has significant effects.
It happens because the current generation's gene pool was used incorrectly when choosing the alleles for the following generation. It doesn't happen as a result of any environmental factors.
The allele frequency of the genes is relatively stable in large populations. because genes do not affect fitness and do not have a natural selection pressure against the alleles, the allele frequency of the genes is relatively stable in large populations.
Hence, option 4 is the correct answer.