Textbook Notes (280,000)
CA (170,000)
York (10,000)
NATS (400)
Chapter 9

NATS 1840 Chapter 9: 9.3-Effects of Genetic Variations on Population Size


Department
Natural Science
Course Code
NATS 1840
Professor
Carl Wolfe
Chapter
9

This preview shows half of the first page. to view the full 1 pages of the document.
Genetics vs Population Size
-Founder effect: occurs when few individuals in a population colonize a new habitat that
is geographically isolated from other members. Limited genetic diversity threaten
population.
-Demographic Bottleneck: when only few individuals in a population survive a
catastrophe, lack of genetic diversity make it hard to rebuild population.
-Genetic Drift: random changes in population gene frequencies, leads to unequal
reproductive success.
-Inbreeding: individuals of a small population mate with each other, defective genes.
MetaPopulations
- When individuals of a small population disperse and exchange genes with other
populations.
You're Reading a Preview

Unlock to view full version