Gene flow is the net movement of alleles from one population to another due to the migration of individuals.
Boy am I glad that I followed those Caribou... they led me to you.
I am genetically diverse!
Genetic diversity is often the result of gene flow and may help the population survive, allowing natural selection to act. Another advantage of gene flow is reducing inbreeding depression.
Little Timmy over there has the alleles for light grey fur and larger ears because his mother and I come from different gene pools.
A possible disadvantage to gene flow is the interactions among alleles without any effect of the environment: immigrant alleles might simply not work well with combinations of local alleles.
My ears are cold dad!
Mine too honey!
You're probably wondering how exactly gene flow relates to evolution. Migration into or out of a population may be responsible for a marked change in allele frequencies, which can introduce new traits. These traits will now be apart of each generation. resulting in that species evolving.
Thanks for joining us, we hope you learned a thing or two about gene flow!