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NEET 2004 Biology question

BiologyPrinciples of Inheritance and VariationNEET 2004

The recessive genes located on X-chromosomes in humans are always -

Answer: (2)

Solution

A human male has only one X chromosome (he is hemizygous), so a recessive allele on it has no dominant allele to mask it and is always expressed in the male phenotype. In females two X chromosomes are present, so a

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Question ID VK-089459