Lecture 20 Flashcards Preview

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Flashcards in Lecture 20 Deck (8)
1

Females need to conserve energy for what?

egg production

2

Females are only ________ for a short period of time.

receptive

3

What are some pressures that females face when trying to select a mate?

Health
Access to resources

4

What is intersexual selection?

Individuals of one sex select individuals of the opposite sex for reproduction

5

Intrasexual selection?

• Individuals of the same sex compete for access to preferred
mates of the opposite sex

6

What is Bateman's principle?

females should
exhibit higher rates of selection than males
due to the costs associated with
reproduction; this increased selection
pressure should result in high variance in
male reproductive success

7

Eggs are expensive to produce and cause females to have limited what?

reproductive success as compared to males

8

Define Secondary sex characteristics?

traits that are not associated directly with the act of mating but
are used to judge genetic fitness and influence mate selection
• Antlers
• Plumage
• Coloring (especially in birds)