BIO 1130 Lecture : BIO1130 Keywords for Lecture 3

• School: University of Ottawa
• Department: Biology
• Course: BIO 1130
• Professor: All

Document Summary

A burst of speciation associated with a move into new situations. Demonstrated when patterns of evolution appeared to progress from living in wooded habitats to living in open grasslands. Same as a derived character essentially; a new version of a trait found in the most recent common ancestor of a group. It may or may not be superior to the primitive character it came from. One member or a pair (or any series) of genes occupying a specific spot on a chromosome that controls the same trait. E. g. a pair of alleles controlling the same trait eye colour (one allele codes for blue eyes, another for brown eyes) Measurement determining how frequent the allele expression of a particular gene arises in a population. This separation occurs sometimes when a barrier divides a large population into two or more units, either by vicariance or dispersal (the movement of organisms away from their place of origin, due to weather for example)