ANTH 350 Lecture 2: Hereditability
Document Summary
Retained in genetics because of inbreeding: pleiotropy and polygenic traits. Know this is not the case for most gene. Usually a lot in play for phenotypes. Polygenic traits: trait resulting from combined actions of more than one gene. Someone who is tall in the philipines is not tall in the. If we measure enough people, will end up with a bell-curve. The more traits that contribute, the more variation. Pleiotropy: single gene that has multiple phenotypic effects: hereditability. Related to interplay between genetics and the environment. Trying to determine how much variation is the result of genetics. Twin studies used to determine environment vs genetics. Variability cause by genetic/ (variability caused by genetics+ variation caused by. Population genetics: the beak of the finch: an example of natural selection. Finches with larger, stronger beaks withstand drought better because their beaks can crack thick shelled nuts. Survive and reproduce more often than smaller beaked finches.
