BIOL 1103K Lecture Notes - Lecture 6: Eukaryote, Probability Distribution, Speciation
Document Summary
If previous conditions are met frequency of alleles will not change: therefore . P = frequency of dominant allele in the population. Q = frequency of recessive allele in the population. Gene flow is the freedom to reproduce with anyone in the species. Allows the maintenance of a single species. If you interrupt gene flow, you begin to accrue differences within a species: population size, degree of importance that chance plays is a consequence of population size. Stabilizing selection: selecting for the average and against the extremes. Disruptive selection: selecting for the extremes and against the average. Directional selection: what used to be the extreme becomes the average: results of natural selection, adaptation, biotic, abiotic, adaptation increases fitness, so you are better able to compete within your species and with other species, competition. Interspecific: co-evolution, predator and prey interactions, changes in one necessitates changes in the other, speciation, phyletic evolution, divergent evolution, geographic isolation.
