Week Two - Evolution & Emotion Flashcards
(8 cards)
Natural selection involves…
Adaptations that improve an organism’s fitness and allows them to survive longer to reproduce
Sexual selection process
Varied population of organisms compete for mates, variation in reproductive success, increase in advantageous traits in the population
Inter-sex selection
Meant to appeal to the opposite sex
Intra-sex selection
Allows for competition for motes within the same sex
Costs of sex
Time, energy, vulnerability, proximity, disease, genetics
Investment
Females tend to invest more into offspring so tend to be the deciders in sexual selection
Sexual dimorphism
Physical differences between males and females of the some species
Sexual selection in humans
Breast enlargement, penis size, music, language, intelligence