A colour blind man marries daughter of a colour blind person. Then in their progeny

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4.Principles of Inheritance and Variation

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A colour blind man marries the daughter of a colour blind person. Then in their progeny

None of their daughters are colour blind

All the sons are colour blind

All the daughters are colour blind

Half of their sons are colour blind

(AIPMT-1988) (AIIMS-1983)

Solution

(d)Since daughter of a colourblind person will be a carrier of the disease and only one of the two $X$ chromosomes will bear the recessive gene for disease, so half of their sons will be colourblind.

Standard 12

Biology

Given below is a highly simplified representation of the human sex chromosomes from a karyotype. The gene $'a'$ and $'b'$ could be of

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A normal woman whose father was colourblind marries a normal man. What kinds of children would be expected and in what proportion

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In pedigree analysis, the square, blackened and horizontal lines represents

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Which one is the sex linked trait

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A woman with two genes for haemophillia and one gene for colourblindness on one of the $X$ chromosomes marries a normal man. How will the progeny be

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(AIPMT-1998)

A colour blind man marries the daughter of a colour blind person. Then in their progeny

Solution

Similar Questions

Given below is a highly simplified representation of the human sex chromosomes from a karyotype. The gene $'a'$ and $'b'$ could be of

A normal woman whose father was colourblind marries a normal man. What kinds of children would be expected and in what proportion

In pedigree analysis, the square, blackened and horizontal lines represents

Which one is the sex linked trait

A woman with two genes for haemophillia and one gene for colourblindness on one of the $X$ chromosomes marries a normal man. How will the progeny be

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