Suppose That the Gene That Determines How Many Fingers a Person

question 41

Multiple Choice

Suppose that the gene that determines how many fingers a person has is coded such that having 5 fingers is dominant and having 6 fingers is recessive. If a person's mother has 5 fingers and his father has 6 fingers, what is the probability that he will be born with 6 fingers?

• A) 0 %
• B) 50 %
• C) 100 %
• D) the percent cannot be determined because we do not know if his mother is homozygous or heterozygous for this trait

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Definitions:

Cineradiography

A motion picture recording of X-ray images showing the movement of a part of the body.

Fluoroscopy

A medical imaging technique that uses X-rays to obtain real-time moving images of the interior of an object or a body.

Angiography

A medical imaging technique used to visualize the inside, or lumen, of blood vessels and organs of the body, with particular interest in the arteries, veins, and the heart chambers.

Aortogram

A radiographic image or angiogram of the aorta obtained after the injection of a contrast medium to visualize the aortic arch and its branching vessels.