ANT208H1 Lecture Notes - List Of File Formats, Menarche, Pleiotropy
Document Summary
Reproductive strategies: sexual selection: mate choice + parenting, sex differences: development + life history, ecological variation: secular changes. Reproductive health, by gender: birthing, breastfeeding, sexual health. Biological sex + gender = a function of phenotype. Product of genetics x environment single informational unit. Phenotypic sex (accessory sex structures: chromosomal sex usually agrees with phenotypic sex, this is determined after puberty (body proportions, voice deepening in males, breast development in females = adult sex phenotypic development) Modulate gene expression during lifespan: early development has large effects on long term influence (just like nutrition examples) Meaning that early exposures can influence sex development. Early development has long-term effects, larger influence. Predicts that there would"ve been many species with an evolutionary history of gender specific selection forces that lead to gender-specific lifetime investment which may lead to conflicting needs. Gender-specific lifetime investment in: mating effort, reproductive effort. Gender-specific intensity of intra-sexual competition for mates.
