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makkiz [27]
3 years ago
9

Discuss what is meant by heterozygote advantage and use sickle-cell anemia as an example

Biology
1 answer:
vodomira [7]3 years ago
6 0
When a single copy of a disease allele doesn't result in a disease but instead is good for the person or organism that carries it, we say that allele has a heterozygote advantage. In other words this occurs when heterozyhotes have increased fitness over both homozygotes.  A good example is sickcle cell trait, which protects against malaria in heterozygotes, but causes a deadly disease in homozygotes. 
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