Evolutionary Explanations For Partner References: Outline

Question 1

The Nature of Sexual Selection;

Answer 1

this term explains the evolution of characteristics

these characteristics cause a reproductive advantage rather than a survival advantage

Question 2

Intrasexual Selection:

Answer 2

individuals of one sex must outcompete other members of the same sex in order to gain access to the other sex

those who are successful, mate and pass on their genes and losers don’t

whatever characteristic that caused the success becomes more common in the gene pool

Question 3

Intersexual Selection:

Answer 3

members of one sex evolve preferences for desirable qualities in potential mates

those of the opposite sex who possess these characteristics (e.g. resources) then gain a Mating Advantage over those who don’t

Question 4

Sexual Selection and Long-Term Mate Preferences:

Answer 4

random mating isn’t logical as it pays to be choosy

the genetic quality of a mate will determine half the genetic quality of their offspring

Buss (2003) for females: being attracted to males with resources, being able to protect etc

for males: attracted to females who display signals of fertility and reproductive value