PSYCO104 Lecture Notes - Lecture 11: Growth Hormone, Gene Knockout, Human Genome Project

• School: University of Alberta
• Department: Psychology
• Course: PSYCO104
• Professor: Eric Legge

Document Summary

Psych 104 lecture #11 genes, evolution and behaviour. Chromosomes and genes: chromosome: tightly coiled molecule of dna, partly covered by protein and contains many genes, genes: biological units of heredity on chromosomes" dna. Every cell has 46 chromosomes (23 pairs) in humans. Combinations of bases: a, t, g, c. Genes contain bases, carry codes for protein and manufacture these proteins. How code is laid down determines the function of the gene. All of the genes are important for morphological and behavioural traits. Human genome project: genetic map published in 2001, humans have 25 000 genes (same as fruit flies) fewer than expected, 200 genes may be from bacteria inserted into early ancestors. Causes one set of genes to be not present. Knockout gene responsible for reuptake of serotonin (increased amounts: result: mice without serotonin had lots of stress and depression-like symptoms. Difference/variance of a trait across a population. 0. 60 = 60% of x is due to genetic factors.