In Down's syndrome of a male child, the karyotype will show

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45 + XY

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45 + XX

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XXY

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Solution

The correct option is B 45 + XY
Down's syndrome is trisomy of 21st pair of autosomes. Hence the karyotype will show 45 autosomes and XY for a male child.

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Similar questions

Q. Condition of sex chromosomes in a male child of Down's syndrome will be :

Q. In Down's syndrome of a male child, the sex complement

Q. Answer in 40 to 80 words:
Write the karyotype of the following syndromes:
i) Down's syndrome
ii) Kinefelter's syndrome
iii) Turner's syndrome

Q. Which genetic disorder is caused due to the presence of an additional copy of X-chromosome (A Karyotype of 47, XXY)?

Assertion [A]: Klinefelter syndrome occurs only in males.

Reason [R]: Klinefelter syndrome is characterised by an additional Y chromosome in the karyotype.

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In Down's syndrome of a male child, the karyotype will show

The correct option is B 45 + XYDown's syndrome is trisomy of 21st pair of autosomes. Hence the karyotype will show 45 autosomes and XY for a male child.

The correct option is B 45 + XY
Down's syndrome is trisomy of 21st pair of autosomes. Hence the karyotype will show 45 autosomes and XY for a male child.