Psychology 1000 Study Guide - Midterm Guide: Job Security, Social Darwinism, Polygynandry

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: John Campbell

Document Summary

It is known as nature and nurture together. Scientists realized that asking whether a particular behaviour is caused by genetic or environmental factors makes no sense. Gregor mendels research on garden peas was the beginning of the genetic theory. He found that heredity involves the passing of specific organic factors that might produce visible characteristics in the offspring or they might simply be carried for possible transmission to another generation. Genotype: specific makeup of an individual. Phenotype: the observable characteristics produced by the genetic endowment. **note genotypes are present from conception and never change; but phenotypes can be affected by other genes or by the environment** The egg and sperm carry heredity information in the form of chromosomes: tightly coiled molecule of dna that is partly covered in protein. The dna portion of the chromosome carries the hereditary blueprint units called genes. Humans have 46 chromosomes in every cell except sperm/egg (has 23)