Genetics and Evolution-The evolution of alturistic behaviour

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  • Created by: jessica
  • Created on: 19-03-13 16:14
What is altruism?
An action that enhances fitness of another individual while reducing fitness of the actor.
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Who are the alarm calls intended for?
the flock/herd to alert to a predator and to the predator to know that it has been spotted.
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What is kin selection?
if the group are related then there is a selection of copies of the same genes. Then there is a benefit in inclusive fitness may exceed cost to the individual. Kin selection ensures the survival of the genes, not certain individuals
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What does the coefficient of relatedness measure?
how closely individuals are related. As offspring carry half the genes of each parent so the coefficient is 0.5.
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What does kin selection need to work?
recognition, remembering and proximity of the individuals/relatives.
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What does EPC stand for?
extra pair copulations
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What is reciprocal altruism?
"you scratch my back and I'll scratch yours" situation.
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Give an example of reciprocal aitrusim
e.g. in vampire bats, it needs to feed every 2 days otherwise it will die. So it will beg regurgitation of blood meals from other bats.
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Other cards in this set

Card 2

Front

Who are the alarm calls intended for?

Back

the flock/herd to alert to a predator and to the predator to know that it has been spotted.

Card 3

Front

What is kin selection?

Back

Preview of the front of card 3

Card 4

Front

What does the coefficient of relatedness measure?

Back

Preview of the front of card 4

Card 5

Front

What does kin selection need to work?

Back

Preview of the front of card 5
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