BIOB51H3 Lecture Notes - Lecture 10: Mutation Rate, Selection Coefficient, Population Genetics
4 Mar 2014
School
Department
Course
Professor
Document Summary
Models being heterozygote superiority, frequency dependent selection, etc. Cichlids are a diverse group of fish and a large amount of them live in lake tanganyika. There was a book written on it called darwin"s dreampond because there has been incredible adaptive radiation of these fishes. They have different kinds of feeding, colours, sizes, etc. but one type that"s there is called the scale-eating fish, which eats the scales of other fish. These fish swim up to the side of the other fish and bite them. Right-handed fish have their mouths twisted in that direction since they attack the left side. So they have been under selection in order to get the best gulp of scales from their victims. So they swim to the left, grab a bunch of scales and swim out. Same thing for the left-handed fish except their mouth is twisted the other way since they attack the right side.
