PSYA01H3 Chapter Notes - Chapter 3: Guanine, Phenotype, Reuptake
Document Summary
Genes: the basic units of heredity; they are responsible for guiding the process of creating the proteins that make up our physical strutures and regulate development and physiological processes throughout the life span. Phenotype: consists of the observable characteristics, including physical structures and. Humans have approximately 20,000 25,000 genes distributed across 23 pairs of chromosomes (half from father, half from mother) Homozygous genes are two corresponding genes at a given location on a pair of chromosomes that are the same. Heritability: a statistic, expressed as a number between zero and one, that represents the degree to which genetic differences between individuals contribute to individual differences in a behaviour or trait found in a population. Depression and anxiety were found to be less inheritable as a child ages but intelligence increased with age. Nucleus accumbens: involved in emotion, particularly experiences of pleasure and. Hippocampus: critical for learning and memory, particularly the formation of new reward memories.
