Psychology 1000 Chapter Notes - Chapter 4: Harm Avoidance, Big Five Personality Traits, Phenotypic Trait

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Dr.Mike

Document Summary

The observable characteristics produced by the genetic endowment. A tightly coiled molecule of deoxyribose acid (dna) that is partly covered by protein. Units that contain dna portion of the chromosome carries the hereditary blueprint. In humans, every cell in the body, except sex cells (egg or sperm) which have 23 each, has 46 chromosomes. Alternative forms of a gene that produce different characteristics. Genes affect our body"s development and functioning though one general mechanism: The particular characteristic that it controls will be displayed. The characteristic will not show up unless the partner gene inherited from the other person from the other parent is also recessive. A number of genes pairs combine their influences to create a single phenotypic trait. Magnifies the number possible variations in a trait that can occur. Cut long threadlike molecules of genetic dna into pieces. Insert the new strands into a host organism. Scientist have used this procedure to produce human growth hormone.