BIOL 103 Final: Complete Final Exam Lecture Review - Boag

• School: Queen's University
• Department: Biology
• Course: BIOL 103
• Professor: Virginia K Walker

Document Summary

Nonrandom mating selecting mates based on desirable characteristics. Convergent evolution process whereby organisms not closely related independently evolve similar traits as a result of having to adapt to similar environments. Co-evolution change in the genetic composition of one species (or group) in response to a genetic change in another example: arm"s race. Genetic drift change in the frequency of a gene variant in a population due to random sampling random depressions in a certain allele frequency. Gene flow: movement of alleles by migration of individuals or gametes between populations, example: west and east shellos living on opposite sides of. Coronet; if one shellos migrates to the other side and breeds with shellos of the other type (perhaps with fewer dominant alleles), it will incorporate its dominant alleles into the other population. Natural selection: operates on phenotypes in populations; genetic change in offspring only if variation is heritable, changes based on what is best now.