BIO 1130 Study Guide - Midterm Guide: Synapomorphy, Speciation, Cladogenesis

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

Document Summary

Speciation that occurs when biological populations of the same species become isolated from each other which can then affect genetic interchange. Gene flow: when interaction doesn"t occur due to a physical barrier. Through time, the changes in gene frequency could lead to the formation of a new species. Unique trait particular to a species and its descendants which can be used as a defining characteristic. A distinct anatomical feature known as a derived trait. Only found in one member of a clade. Cells and organisms are those containing more than two paired sets of chromosomes. In the form of mating rituals and signals. A group of closely related organisms that are similar to each other. The cladistic relationship among relatively plesiomorphic and relatively apomorphic. A group of organisms that have evolved from a common ancestor. Method of classification of living organisms based on the construction and analysis of cladograms. Sym indicates ancestral characters are shared between different groups.