If a Recessive Allele Causes a Fatal Disease That Kills

question 10

Multiple Choice

If a recessive allele causes a fatal disease that kills the affected individual before he or she can reproduce,why doesn't that allele quickly become extinct in the population?

• A) Alleles are never lost from a population.
• B) The homozygous-dominant individuals protect the recessive allele in their genomes.
• C) The recessive allele is carried in the genome of heterozygotes, who do not have the disease.
• D) The homozygous-recessive individuals give their alleles to other individuals before they die from the disease.

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