Relationships

Question 1

Anisogamy

Answer 1

Differences between male and female sex cells (gametes) -> basis of human reproductive behaviour

Question 2

Consequences of anisogamy

Answer 2

No shortage of fertile males but a fertile female is a rarer ‘resource’
Gives rise to two types of sexual selection - intersexual and intersexual selection

Question 3

Inter-sexual selection

Answer 3

Between the sexes: strategies used by males to select females or vice versa. Preferred strategy of the female : quality over quantity.

Question 4

Male strategies for inter sexual selection
(Have evolved seeking to maximise opportunities for mating success)

Answer 4

Courtship rituals - allow males to display genetic potential through characteristics and resource abilities
Size - Males evolved to be bigger, demonstrating strength for success competition against others
Sperm competition
Mate guarding
Sneak copulation

Question 5

Female strategies

Answer 5

Sexy sons hypothesis
Handicap hypothesis
Courtship

Question 6

Intra sexual selection

Answer 6

Within each sex, to be the one that is selected