IB35ACS Study Guide

Increase in immune disorders in developed countries o

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: oday o Cultural variation, evolution, and modern influences on our biology result in a wide variation in human fertility LECTURE 21 - SOCIOBIOLOGY ● Standard Social Science Model o embodies idea that human mind has no inborn tendencies or inclinations, language ● E.O Wilson: fired for his work, social insects, help sister ants because genes so similar ● Infanticide: young children much more likely to be abused, killed by stepparent ● Naturalistic fallacy: natural=good, unnatural=bad, cannibalism ● Ethology: the study of behavior, humans have very plastic behavior ● Exercise Study: large differences between identical and fraternal twins ● Do genes influence specific behaviors? o innate (loud sudden noises) vs. conditioned fear (falling is learned) o freeze/startle, flight, or fight o learned fear: hippocampus, amygdala controls fear ● Is fear evolutionary conserved? o mice: stathmin: gene controls learned and innate fear, expressed in amygdala o humans: 2 common SNPs in STMN1 regulatory region, females lacking the SNPs were more bothered by negative images and had more pronounced startle response ● Post- Traumatic Stress Disorder o 14% of combat veterans of Iraq & Afghanistan o 6.8% of general pop: smaller amygdala volume is associated with PTSD, stathmin as target for treatment o Vietnam, 30% PTSD ● Genetic predisposition to mental illness o same mutation can manifest in different illnesses, depend on life experiences o Relative risk: - fold...
View Full Document

Ask a homework question - tutors are online