PATHOLOGY MCQ
GENETICS AND DISEASE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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male-pattern baldness
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color blindness
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hemophilia
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all choices are correct
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Detailed explanation-1: -Sex-Linked Traits – Key Takeaways Y-dominant, X-linked recessive inheritance, and X-linked dominant are the three main ways that sex inheritance occurs. Mendal’s law is not followed by X-linked genes as males carry only one x chromosome (copy of the X gene) and females carry no copies of the Y gene.
Detailed explanation-2: -Sex-linked genes are located on either the X or Y chromosome, though it more commonly refers to genes located on the X-chromosome. For that reason, the genetics of sex-linked (or X-linked) diseases, disorders due to mutations in genes on the X-chromosome, results in a phenotype usually only seen in males.
Detailed explanation-3: -As described earlier, there are two types of sex-linked inheritance: X-linked and Y-linked inheritance.