Respuesta :
					                   The Amish have a genetic trait called polydactyly which is rare among other populations of people. This means that a person can 6 fingers, usually an extra thumb. This kind of evolutionary effect that is exhibited in this specific example is called the Founder effect. This happens when there is a small number of colonizing ancestors. 
So, the founder effect since it refers to migrating population.
					                
					             So, the founder effect since it refers to migrating population.
