Which of the following is true of gene flow?

The more gene flow between neighboring populations, the more similar the populations will become.
It occurs as organisms move between different populations.
These are all true statements about gene flow.
It creates genetic variation.
@greatmath678

Question

Which of the following is true of gene flow?
 		
	The more gene flow between neighboring populations, the more similar the populations will become.
	It occurs as organisms move between different populations.
	These are all true statements about gene flow.
	It creates genetic variation.
@greatmath678

18jonea · Answer

@aaronq

anonymous · Answer

All of the statements are true.  That it creates genetic variation is a bit of a stretch, because it doesn't cause mutation, but it would help to maintain variation because alleles tend to become fixed in small subpopulations.  The allele frequencies would not move to fixation as rapidly if the population is large.  And if there is enough gene flow then you are basically looking at one big population.