PSYC 1200 Lecture Notes - Lecture 3: Heritability, Cytosine, Guanine

• School: University of Manitoba
• Department: Psychology
• Course: PSYC 1200
• Professor: Launa C.Leboe- Mcgowan

Document Summary

Identify the parts of the brain and know their main functions. 23 pairs (half from mom, other from dad) Genes: basic unit of heredity located on chromosomes. Contains 4 nucleotides: adenine (a) cytosine (c) guanine (g) thymine (t) Chromosomal aberration: the rearrangement of genes within chromosomes. 0= genes do not contribute to differences in trait. Differences in genes contribute to behaviour, trait in population. Influences of genes on behaviour: estimates of heritability apply only to people in specific enviro, estimates of heritability apply to groups of people, not individuals, high heritability traits can be influenced by enviro. Intrasexual selection: compete against other members for mate (gorilla, deer) Intersexual selection: having impressive physical features that display genetic superiority (peacock tails) Glial cells: provide structural support and protection, waste removal, and nutrients for neurons. Dendrites: tree-like branches extending from the cell body. Receive messages from other neurons or sensory receptors. Cell body (aka soma): maintains life of the neuron.