Natural Selection vs Sexual Selection Flashcards

1
Q

As well as traits that give someone an sexual advantage, there are traits that can give someone a…

A

survival advantage

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2
Q

What is a survival advantage?

A

traits that make it more likely an individual will survive long enough to reproduce

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3
Q

sometimes the traits that are attractive to a mate makes an individual…

A

less likely to survive

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4
Q

sexual selection can cause…

A

conflict

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5
Q

whats an example of sexual selection getting in the way of natural selection?

A

Peacocks - the females have bright coloured tails to attract males but the bright colours attract predators

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6
Q

who came up with the Handicap Principle?

A

Zahavi (1975)

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7
Q

what did Zahavi argue?

A

displaying a noticeable handicap to survive actually indicates survival strength

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8
Q

according to the handicap principle, if someone has survived with unhelpful characteristics, this means…

A

they have superior genes

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9
Q

one example of the handicap principle in humans

A

males have a strong, square jaw due to high levels of testosterone

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10
Q

what does testosterone do?

A

it lowers the immune system

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