If a Pedigree Involves a Y-Linked Trait, Which of the Following

question 23

Multiple Choice

If a pedigree involves a Y-linked trait, which of the following observations is absolutely TRUE?

• A)All males in the pedigree should be affected.
• B)Mostly males are affected.
• C)Rarely is a female affected.
• D)All affected males should have affected fathers.
• E)Some unaffected males could have affected fathers.

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