CAS PS 101 Lecture Notes - Lecture 7: Protein Production, Acetyl Group, Heredity

• School: Boston University
• Department: Psychological & Brain Sciences
• Course: CAS PS 101
• Professor: Ira Wells

Document Summary

Dna nucleotides nitrogenous bases= adenine/thymine, cytosine/guanine: sugar molecule, protein production control. Histones: suppression: add methyl to end (tightens histone binding, expression: add acetyl to end (relaxes histone binding) Dominant vs. recessive: curly hair is dominant in the population, huntington"s disease is also dominant. Darwin"s natural selection: key is genetic fitness , mutation: change in genetic information, evolutionary psychology. Using principles of natural selection; focuses on evolution of behavior and mind. Heritability: 0 (no variance ) to 1 (all variance in trait is due to heredity, many characteristics cannot be traced to a single gene. Mental processes and behaviors develop through complex interactions with environment. What happens: family studies: look at blood relatives to identify heritability. Closer the blood relation, greater the propensity of the trait: twin studies: identical twins = monozygotic; fraternal = dizygotic. Epigenetics: the influence of the environment on genetic expression (in identical. Experimenter bias (wanting to believe similaries) twins: ex/ adoption studies.