NEET Biology question

If a colourblind woman marries a normal visioned man, their sons will be

(A)All normal visioned
(B)One half colourblind and one half normal
(C)Three-fourth colourblind and one-fourth normal
(D)All colourblindCorrect

Answer: (D)

Solution

A colourblind woman is homozygous recessive () and can only ever contribute an allele to her offspring; since sons receive their single X-chromosome from the mother (and Y from the

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Question ID VK-119617