PSYC 1010 Lecture Notes - Lecture 6: Phenotype, Selective Breeding, Chromosome

• School: York University
• Department: Psychology
• Course: PSYC 1010
• Professor: Agnieszka Kopinska

Document Summary

Gaba inhibition of brain activity - implicated in anxiety disorders: glutamate: learning, memory and schizophrenia. Behavioural genetics: the study of the influence of genetic factors on behavioural. Twin studies compare resemblance of identical (monozygotic) and fraternal (dizygotic) twins on a trait. Adoption studies examine resemblance between adopted children and their biological and adoptive parents. Chromosomes are strands of dna carrying genetic information. 46 chromosomes in pairs (sex-cells 23 single). Each chromosome has thousands of genes (double copies). Homozygous (two genes in a specific pair are the same), heterozygous. Genotype refers to a person"s genetic makeup. Phenotype refers to the ways in which a person"s genotype is manifested in observable characteristics.