Geographic Isolation - Jacob Wallace

Geographic Isolation is when a population of organisms are separated by a body of water, a landmass, a canyon, or just by distance. When geographic isolation happens they usually evolve differently from each other. A famous example is when Charles Darwin, visited the Galapagos islands and saw that the finches had different beaks. Geographic isolation is usually an accident, but can happen on purpose. Humans can purposely separate animals and study how they evolve in different environments.

Another way they become different from each other is because when they breed with their group, there is less genetic variation. So when or if they meet each other again they will be different from each other, because they would have had different genes in the two groups. They also don't just change in appearance or structure, they can change in behavior too. Which can cause one group to not mate with the other, or even be hostile towards the other group. Isolation is sometimes permanent and sometimes only temporary. 

Citations

"Examples Of Geographic Isolation". YourDictionary. N.p., 2017. Web. 4 Jan. 2017.

"Geographic Isolation". Ev-sam.tripod.com. N.p., 2017. Web. 4 Jan. 2017.

"What Do You Mean We Cant Meet Cause Of Geographic Isolation". Memes.com. N.p., 2017. Web. 4 Jan. 2017.