BIO 1130 Study Guide - Final Guide: Sympatric Speciation, Phylogenetic Nomenclature, Hybrid Zone

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

Document Summary

The divergence of populations into different species by physical isolation of populations in different geographic areas. Characteristics of a colonizing population are likely to be different from original species due to founder effects. The state of having more than two full sets of chromosomes (polyploidy) due to hybridization between two species. If two aren"t able to combine, they may duplicate separate genes and will make diploid gametes. Only plants are able to do this example is tragopogon specis introduced to north america hybridized and formed offspring that became teatraploid and formed new species. The state of having more than two full sets of chromosomes due to a mutation that doubled the chromosome number. Ex: maidenhead ferns, mistake in meiosis in ancestor and created species of tetraploid ferns. They become genetically isolated with incapacity to mate with anyone but themselves. Ways that males compete for females separate species.