Multiple choice

The karyotypes found in normal human sperm is

  1. 23, Y

  2. 23, X

  3. 46, XX

  4. 46, XY
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A Correct answer
Explanation

Human sperm and egg are in the haploid states, i.e. they only have one copy of each chromosome, or 22 autosomes and one sex chromosome (either X or Y). Therefore, the most likely karyotype, of those listed, to be found in normal human sperm is 23, X. 23, Y is an equally likely karyotype in normal sperm.

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