ANTH 1 Lecture Notes - Lecture 7: Gene Pool, Reproductive Isolation, Population Genetics

• School: Irvine Valley College
• Department: Anthropology
• Course: ANTH 1
• Professor: Clifford

Document Summary

Population genetics study of changes in the frequency of alleles in a population. Change in allele frequency from generation to generations. Deme a local group of organisms that have similar genes, interbreed, and produce offspring. Generally the same species all members of all populations of organisms that can breed to create viable offspring. Have reproductive isolation members of this population cannot interbreed with members of another population. Gene pool all of the variation in a population at a specific genetic locus. Evolution = frequency (percentage) of each allele in the gene pool changes. For example: parents: 80% b and 20% b. Small genetic changes accumulate and result in change. Natural selection is the main mechanism of evolution but other mechanisms do exist. Changes in allele frequency from generation to generation. Speciation events that occur after many generations. Population geneticists want to know why allele frequency is changing in a population. Mutation alleles randomly change into new alleles.