Sickle Cell Anemia Is a Recessive Trait in Humans

question 18

Multiple Choice

Sickle cell anemia is a recessive trait in humans.In a cross between a father who has sickle cell anemia and a mother who is heterozygous for the sickle cell allele, what is the probability that all of their first three children will be unaffected?

• A)1/4
• B)1/2
• C)none
• D)1/8
• E)1/16

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Definitions:

Biopsy

A medical procedure that involves taking a small sample of tissue for examination to diagnose disease.

Abbreviation

A shortened form of a word or phrase used to save space or avoid repetition, commonly found in written language.

Bx

Short for biopsy, a diagnostic procedure that involves the extraction of sample cells or tissues for examination to determine the presence of disease.

Febrile

Characterized by or relating to a fever; feverish.