Darwins three observations

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  • Created by: dan_f99
  • Created on: 09-01-18 14:07
Variation exists between individuals in a population
It is deduced that some individuals have an advantage over others
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There is potential for each individual to produce large numbers of offspring
There is a struggle for survival. The 'fittest' are the ones more likely to survive and reproduce.
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The number of adults in a population remain constant from one generation to the next.
The frequency of alleles increases over a number of generations. If a group becomes separated the population of offspring organisms may be different to to be described as a new species.
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Card 2

Front

There is a struggle for survival. The 'fittest' are the ones more likely to survive and reproduce.

Back

There is potential for each individual to produce large numbers of offspring

Card 3

Front

The frequency of alleles increases over a number of generations. If a group becomes separated the population of offspring organisms may be different to to be described as a new species.

Back

Preview of the back of card 3

Card 4

Front

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Back

Preview of the back of card 4

Card 5

Front

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Back

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