Sexual selection & partner selection

Question 1

parental investment

Answer 1

everything that demands resources that could’ve gone towards the organism itself that we instead put toward the offspring, for example pregnancy or feeding your baby

Question 2

Fischer’s runaway process

Answer 2

a hypothoses that says that if a male has a quality that females find attractive this quality will spread and grow more prominent. the quality can “run away” and become too costly for an individual and that would then mean that there becomes less of it.

Question 3

Zahavi’s handicap principle

Answer 3

hypothesis that says extreme traits in and of themselves have no value, but signal that an individual has survived despite their handicap which points to good genetic health and overall fitness

Question 4

Hamilton and Zyk hypothesis

Answer 4

extreme qualities such as ornaments signal resistance to parasites

Question 5

The Red Queens

Answer 5

hypothesis that evolution is needed so that you don’t “drown”. this is a reason for sexual reproduction - it creates more diversity than cloning and thus pushes evolution forward

Question 6

kroppsdimorfism/könsdimorfism

Answer 6

difference in body sizes dependent on gender. big difference usally means more aggressive males for example

Question 7

“Meat for sex”

Answer 7

In chimpanzees, who are primarily vegetarian, there is a hypothesis that males offer females meat for sex. probably not as true as once thought but still funny

Question 8

Mänsklig sexuell konflikt

Answer 8

båda parter tjänar på att ha flera trogna partners