Natural selection - STEP BY STEP

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  • Created by: Tasha.L
  • Created on: 10-05-16 23:45
State the definition of natural selection.
The gradual process by which a characteristic becomes less common within a population, in response to the environment, determining the breeding success of those organisms with the specific characteristic.
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1.
DNA mutates.
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2.
This can cause an organism to evolve a different physical or behavioural trait within the population.
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3.
This characteristic may provide the individual with a competitive advantage: they may be better suited to the environment and so out-compete the others.
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Survival of the fittest occurs.
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The organism with the differing characteristic will therefore survive and reproduce, passing on its advantageous gene.
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Over time, this gene would become more common within a population.
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Natural selection causes the make-up of a population to constantly change, and thus generates biodiversity.
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Other cards in this set

Card 2

Front

DNA mutates.

Back

1.

Card 3

Front

This can cause an organism to evolve a different physical or behavioural trait within the population.

Back

Preview of the back of card 3

Card 4

Front

This characteristic may provide the individual with a competitive advantage: they may be better suited to the environment and so out-compete the others.

Back

Preview of the back of card 4

Card 5

Front

Survival of the fittest occurs.

Back

Preview of the back of card 5
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