PSYC 100 Lecture Notes - Lecture 3: Heredity, Adaptive Behavior, Evolutionary Psychology

• School: Queen's University
• Department: Psychology
• Course: PSYC 100
• Professor: Jordan Poppenk

Document Summary

Each human is made up of 23 chromosomes. These comes for your parent, when looking at dna, you can look at a locus, which is a small part of the dna strand where you will find genes. A human has approximately 25,000 and we share about 99. 5% of these genes with other humans (which make up arms, legs ), the rest is the traits that makes us different. We get a random mix of half of our mother and half of our mother, if you look at your cousins, you only shared about 12. 5% of the same allele traits. Single-gene traits: controlled by a single gene that has two alleles (ex: widow"s peak) only two phenotypes are possible widow"s peak or no widow"s peak by example: eye color, anxiety. Polygenic traits: controlled by two or more genes. One polygenic trait can have many possible genotypes and phenotypes!