PSYC 100 Study Guide - Epigenetics, Lewis Terman, Meiosis
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PSYC 100 Full Course Notes
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Behaviour genetics study of genetic influences on behaviour (e. g. someone with alcoholic parents will be more sensitive to alcohol, but must still make the decision to drink) Our genetic material, or dna, is organized into structures called chromosomes that are in the nucleus of every cell, and is a combination of genetic material from the two parents. A human has 23 pairs of chromosomes (22 autosomes, 1 pair made up of the x and y sex chromosomes males have an xy pair, females have xx) Sperm and egg cells only have half of each pair of chromosomes (through a process called meiosis), so when they combine there is a cell with a complete set of chromosomes. The egg can have only an x chromatid, therefore the sperm"s x or y determines the sex. Genes can be defined as regions of chromosomes that encode (transfer genetic information from dna) particular proteins.
