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Question

What might be the genotype of the mother carrying the gene for colour blindness?

WBBSE Class X Life Science 03 (b) Some Common Genetic Diseases 01 Mark 2025

Answer

XCXc

Explanation:

Colour blindness is an X-linked recessive trait; a carrier woman has one normal allele and one colour‑blind allele on the two X chromosomes, represented as XCXc.

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