Evolutionary explanations for partner preferences AO1

• What is sexual selection?

  Attributes/behaviours which increase reproductive success.
• What is human reproductive behaviour?

  Any behaviours which relate to opportunities to reproduce.
• What is dimorphism?

  Difference in form between the sexes. male and female species look different due to intraselection.
• What is anisogamy?

  Refers to the differences between male and female gametes (sex cells).
• What is intersexual selection?

  Type of sexual selection strategy which is preferred by females where they pick the highest quality mate from a wide selection of available mates.
• Females strive for selecting a genetically fit partner who is willing and able to provide resources.
• What is the runaway process? with example

  Eg. height, when considered attractive, increases the male population over generations because in each generation, females will select the tallest males, therefore characteristic is gradually exaggerated.