genetic diversity

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What differes for organisms within a species?
Alleles
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What does a greater number of alleles give?
Greater genetic diversity
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Are species more or less able to adapt to enviromental change when their genetic diversity is increased?
More able
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Name the three factors that affect genetic diversity.
Selective breeding, The founder effect and Genetic bottle neck
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What is selective breeding?
Identifying individuals with desired characteristics and using them to parent the next generation
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What is the founder effect?
When a new colony is started by a few members of an origional population. The small population size means the colony may have reduced genetic diversity than origional population
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Give an example of the founder effect.
Amish people
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Give an example of selective breeding.
Breeding cows to produce the most milk
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What is the genetic bottle neck effect?
When there is a dramatic drop in numbers of a population. May be due to a chance event like a volcanic eruption or interference by man
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Give an example of genetic bottle neck effect.
North American seals being hunted by man so very few remaining so less genetic diversity
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Other cards in this set

Card 2

Front

What does a greater number of alleles give?

Back

Greater genetic diversity

Card 3

Front

Are species more or less able to adapt to enviromental change when their genetic diversity is increased?

Back

Preview of the front of card 3

Card 4

Front

Name the three factors that affect genetic diversity.

Back

Preview of the front of card 4

Card 5

Front

What is selective breeding?

Back

Preview of the front of card 5
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