Sexual Selection Flashcards
1
Q
Sexual dimorphism
A
differences in appearances between males and females of the same species
2
Q
How has sexual dimorphism evolved?
A
benefit for natural selection, females get to search for specific traits
3
Q
Why do females chose who to mate with?
A
- Eggs are larger than sperm; energetically expensive
-time investment
-parental care
4
Q
Indication of a trait evolving through sexual selection rather than natural selection?
A
one trait will be more favored on one gender than the other
5
Q
Nuptial gifts
A
gifts that the males present to females during mating
6
Q
Good genes model
A
assumption that females are keying on some trait that suggest that males have good genes
7
Q
Runaway selection
A
extreme trait favored and got out of hand too quickly
8
Q
Handicaps Principal
A
sexually selected traits are costly to produce and linked to superior survival skills
9
Q
A
