CHDV 23249 Lecture Notes - Lecture 9: Coevolution, Genetic Correlation, Gamete
1 Feb 2017
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Male bighorn sheep run up to speeds of 35mph upon impact with each other. Horns on head can be as equal mass as skeletal system\ Picks a patch of area, cleans it and readies it for performance. Performance out in the open; susceptible to predators. Natural selection: the disproportionate survival and reproduction of individuals due to phenotype. Sexual selection: selection specific to an individual"s ability to acquire or successfully copulate with mates. Intrasexual selection: selection on traits of one sex based on competition within that sex for access to the opposite sex (competition within the sex: pre-mating typically direct combat infrequently interruption of copulation events selections of "weapons" Not mutually exclusive with intersexual selection (females may start showing preference for traits in males: sperm competition. Mate-guarding copulatory plugs: 2nd male advantage removal of previous male"s sperm. Parental care (males may provide direct parental care)
