English

The number of pair(s) of sex chromosomes in the zygote of humans is ______.

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Question

The number of pair(s) of sex chromosomes in the zygote of humans is ______.

Options

  • one

  • two

  • three

  • four

MCQ
Fill in the Blanks
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Solution

The number of pairs of sex chromosomes in the zygote of humans is one.

Explanation:

A human zygote contains 46 chromosomes arranged in 23 pairs. Out of these:

  • 22 pairs are autosomes.
  • 1 pair is the sex chromosomes (XX in females or XY in males).
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Chapter 4: Heredity - Exercise 1 [Page 244]

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Lakhmir Singh Biology Part 3 [English] Class 10
Chapter 4 Heredity
Exercise 1 | Q 57. | Page 244
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