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Introduction to Reproduction

The sex chrom...

Question

The sex chromosomes of a human female are

A

XX

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B

XY

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C

YY

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D

XO

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Solution

The correct option is A
XX

The nuclei of human cells contain 44 autosomes and two sex chromosomes. In females, the sex chromosomes are the two X chromosomes. Males have one X chromosome and one Y chromosome.

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Similar questions

Q. Human females have XY sex chromosomes.

Which combination of sex chromosomes is present in a female?
(a) XX
(b) YY
(c) XY
(d) none of these

\begin{matrix} Animals & Male & Female Cockroach & X O & X X Grasshopper & X O & X X Human & X Y & X X Bird & Z W & Z Z Fish & Z Z & Z W \end{matrix}

The sex chromosome of different organisms are given above. Which of the following are incorrectly marked?

Q. Out of the two X chromosomes of the human female, one X chromosome is inactivated and heterochromatinized. The inactive X-chromosome can be seen as a darkly stained spot and is called as Barr body. Identify the number of Barr bodies that would be seen in the following genotypes.
46 XO, 46 XY, 46 XXY, 46 XXXY

Q. The number of chromosomes in human male and female are equal?

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Introduction to Reproduction

Standard X Biology

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