A Man and Woman Are Each Heterozygous for the Autosomal

question 15

Multiple Choice

A man and woman are each heterozygous for the autosomal recessive disorder cystic fibrosis. If they want to have three children, what is the probability that only one of the children will have cystic fibrosis?

• A) 1/4
• B) 3/4
• C) 9/16
• D) 9/64
• E) 27/64

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Definitions:

Promissory Estoppel

A law that stops someone from going back on a commitment they've made to another if the second party has trusted this promise to their own disadvantage.

Promissory Estoppel

A judicial doctrine that forbids a party from revoking an assurance given to another party if the recipient has legitimately acted on that promise to their detriment.

Quasi Contract

A legal concept where a court imposes a contractual obligation on a party who has not expressly consented to it, to prevent unjust enrichment.

Illusory Promise

An agreement that lacks a firm commitment or terms, making it unenforceable by law.