9.3- Genetic diversity and adaptation

Created by: Megan2413
Created on: 13-06-17 19:32

What is the definition of genetic diversity?

Total number of different alleles in a population

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What is the general term for a group of individuals of the same species that live in the same habitat and can interbreed?

Population

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would organisms need a greater or smaller genetic diversity to better withstand environmental changes?

Greater genetic variation

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What four things can increase genetic diversity?

- Mutations - Natural selection - Random mating - Immigration of species

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What is natural selection?

The process by which individual organisms with favourable traits are more likely to survive and reproduce than those with unfavourable traits

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How do differences between the reproductive success of individuals affect allele frequency in populations?

- Wide variety of alleles within gene pool - There is competition within the population for resources (which are limited) - Some organisms have an advantage due a favourable allele in the specific environmental situation so better compete for -->

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resources - These individuals are more likely to survive and reproduce - Favourable allele will be passed down generations

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Other cards in this set

Card 2

Front

What is the general term for a group of individuals of the same species that live in the same habitat and can interbreed?

Back

Population

Card 3

Front

would organisms need a greater or smaller genetic diversity to better withstand environmental changes?

Back

Card 4

Front

What four things can increase genetic diversity?

Back

Card 5

Front

What is natural selection?

Back

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9.3- Genetic diversity and adaptation