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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Definitions:

Promissory Estoppel

A legal principle preventing a party from withdrawing a promise made when the other party has reasonably relied on that promise to their detriment.

Consideration

Something of value promised to another when making a contract that motivates both parties to enter into the agreement.

Mistake Of Fact

A legal defense in which an individual argues that a misunderstanding of fact rather than law led to the action that constituted an alleged offense.

Bilateral Mistake

A legal term referring to a misunderstanding where both parties to a contract have incorrect beliefs about an essential fact of the agreement.