Psychology 1000 Lecture Notes - Lecture 1: Karyotype, Mental Chronometry, Heritability

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: All

Document Summary

Topics of the day: gene action, dominant & recessive traits, polygenetic effects. We would expect a 1-year-old child to recover from traumatic brain damage more quickly than an adult. Critical period: environmental exposure at specific interval is critical i. e. white-crowned sparrow must hear adult song between the 7th & 60th day of life; if not they will not be able to sing the song. Important to distinguish: genotype: set of genes you inherit, phenotype: outward expression of genotype (characteristics, behaviours & etc. , cannot infer genotype from phenotype, outward characteristics may not indicate underlying genetic contribution. I. e. hair colour; can be born with blonde hair or can change hair colour to be blonde. Homozygous: if alleles are the same: phenotypic outcome is predictable. Heterozygous: if alleles are different: dominant: produces effect in either homozygous or heterozygous mode, recessive: produces effect only in homozygous mode, eye colour. Brown is dominant and blue is recessive: hair colour.