Which factor listed below most likely results in the loss of genetic variation from small populations?

Question 2 options:

mutation

migration

genetic recombination

genetic drift

The correct choice is genetic drift.

genetic drift is known as the variation in alleles number within a population and it mainly happens in small population where chances of losing an alleles are larger. it is common effect observed when significant number in a population die or when there is significant reduction in birth. hence genetic drift results in loss of genetic variation