PSYA01H3 Chapter Notes - Chapter 3 (p.1): Axon Hillock, Myelin, Homo Erectus
Document Summary
Genes: basic units of heredity, resp. for guiding process of creating proteins that makeup our physical structures. Genotype: genetic makeup of organism, unique set of genes that compose indiv. Of person that show genetic variation (eg. eye colour) Genes are organized by - chromosomes: structures in cellular nucleus that are lined w/ all of the genes an indiv. Inherits extra chromosome = trisomy trisomy 21 = down syndrome. If corresponding chromosomes are same, they are homozygous, differ, then heterozygous eg. people who can taste ptc are either heterozygous or homozygous dominant for taste gene. Behavioural genomics: study of dna and the way in which specific genes are related to behaviour. Behavioural genetics: study of how genes and environment influence behaviour. Monzygotic twins: come from single ovum (egg), which makes them genetically identical. Dizygotic twins: come from 2 sep eggs fert. Heritability: statistic expressed as a # between zero and 1 that rep. the degree to which gene.
