Question

Which of the following is not a means by which genetic variation can occur within an individual organism?

Options

• Genetic drift

• Recombination

• Mutation

• Crossing-over

Answer 1

Genetic drift

Explanation:

Genetic variation within an individual organism comes from processes that generate changes in genetic material, such as recombination, mutation, and crossing-over, all of which alter or reshuffle genes during reproduction. Genetic drift, however, is a random change in allele frequencies that occurs in populations, not within an individual organism’s genome.