A biologist wants to measure the effect of gene flow between populations. Which of the following investigations will allow her to accomplish this goal? 1.An investigation that determines a change in allelic frequency of a wolf population by theimmigration of a wolf from another population
2.An investigation that determines the amount of time it takes for genes from a bee to transfer to the flower it fertilizes.
3.An investigation that determines the causes of mutations in genes that one species of guinea pig transfer to another species of guinea pig.
4.An investigation that determines the rate at which an antibiotic prevents a virus from transferring genes to a cat