The given diagram represents the 23rd pair of sex chromosomes of a couple:
Correct answer: B. Option B
- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation
A son must have the genotype XY, with X being inherited from mother and Y from father. Option B correctly represents it. A,C and D are incorrect.
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About X-linked Recessive Inheritance
X-linked recessive inheritance involves genes on the X chromosome, so males express a recessive allele with no corresponding allele on their single X chromosome, while females may be carriers. Pedigrees cover haemophilia and red-green colour blindness, including carrier mothers, affected sons and the absence of father-to-son transmission.
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More X-linked Recessive Inheritance questions
Eye color in drosophilia is an X-linked trait in which red eye colour is dominant over white eye color. When a white-eyed male drosophila crosses with a red-eyed heterozygous female drosophila, then the type of offspring that would NOT produce are:
The genotypes of parents of a baby girl who is born with haemophilia would be:
The cross that shows the sex determination of a son is:
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A man has hemophilia. Which statement correctly describes the inheritance of this gene?
Which one is a sex-limited trait?