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Dominant and Recessive Alleles

The recessive...

Question

The recessive genes located on the X-chromosome of humans are always

A

lethal

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B

sub-lethal

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C

expressed in males

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D

expressed in females

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Solution

The correct option is C
expressed in males

The recessive genes located on the X-chromosome of humans are always expressed in males because men only have one copy of X chromosome and therefore there is no other dominant allele to mask the expression.

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