Gene Flow

Most species are composed of many local populations that occasionally exchange migrants. Gene flow between local populations is the exchange of genetic material by interbreeding between migrants and members of a local population. Gene flow increases the variation in the genetic composition of a population (because migrants bring "foreign" genes into the population) and decreases genetic differences between the populations exchanging migrants. In the absence of other factors, the time until the populations exchanging migrants become genetically similar is proportional to the inverse of the migration rate. Gene flow prevents continuous genetic divergence of populations that would happen by mutation and random genetic drift. The joint action of mutation, random genetic drift, and gene flow results in complex genetic variation within geographically structured populations.

Worm Farming

Worm Farming

Do You Want To Learn More About Green Living That Can Save You Money? Discover How To Create A Worm Farm From Scratch! Recycling has caught on with a more people as the years go by. Well, now theres another way to recycle that may seem unconventional at first, but it can save you money down the road.

Get My Free Ebook

Post a comment