Sex Differences in Parental Investment

Question 1

AO1

Answer 1

. Females invest more (gametes are fewer and more costly)
. Maternal investment costs = childcare, breast feed young and more burdened by extended period of childcare
-> consequences = extra marital affairs (one man provides resources, other provides good genes) / cuckoldry (improves genes, more social support but chance of abandonment)
. Paternal investment costs = cuckoldry/fidelity of mates
-> consequence = sexual jealousy