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7 Cards in this Set
- Front
- Back
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How can reproductive isolation occur? |
Behavioural changes (different courtship rituals) Seasonal changes (different mating or flowering seasons) Mechanical changes (changes to genitalia preventing successful mating) |
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What does it mean if a population is polymorphic? |
It expresses more than one distinct phenotype |
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What is artificial selection? |
The selection of breeding plants or animals that have desirable characteristics |
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What is inbreeding? |
Breeding between closely related organisms |
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What are the problems caused by inbreeding? |
The individuals are genetically similar so may have the same recessive alleles causing the offspring to be homozygous recessive for potential genetic disorders |
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What are gene Banks? |
This can preserve genetic diversity by promoting outbreeding and reducing the frequency of homozygous recessive disorders They introduce more alleles into the gene pool and increase genetic diversity |
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How can genetic diversity be measured? |
Genetic polymorphism |
