Why Is the Incidence of an Extra Y Chromosome in the General

question 10

Multiple Choice

Why is the incidence of an extra Y chromosome in the general population unknown?

• A)The phenotype is that of a normal male.
• B)Most conceptions with 47,XYY are spontaneously aborted.
• C)The life expectancy for males with 47,XYY is often short.
• D)The majority of males with this sex chromosome abnormality are institutionalized.

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