CHM 1311 Study Guide - Midterm Guide: Common Wheat, Neutral Mutation, Genetic Drift

• School: University of Ottawa
• Department: Chemistry
• Course: CHM 1311
• Professor: Darrin Richeson

Document Summary

Fluctuations in gene frequencies occurring when a increases the organism"s chances of reproductive they are usually rare (neutral or deleterious ex. Disruptive selection leads to speciation it is when the middle characteristics disappears (an m curve) headed towards two normal distribution ex. Before a drought, there are birds with full range of beak sizes due to various sizes of seeds. But when the middle sized seeds are gone (affected by the drought), so are the medium sized beaked birds. When the medium seeds come back, so do the medium sized beaked birds. The females have the choice whether or not to accept the male"s sperm to generate offsprings ex. When a male forces himself on a female, the female might prevent her eggs from being fertilised if she thinks the male"s genes are unworthy; thus, she. Survival of the fit : those who are fit enough to the increase of the allele frequency of a gene by.