Multiple choice

Which of the following genotypes and phenotypes in a man may be the correct result of aneuploidy in sex chromosomes?

  1. 22 pairs + XXY chromosomes

  2. 22 pairs + XX females

  3. 22 pairs + XXXY females

  4. 22 pairs + X females

  5. --

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A Correct answer
Explanation

Aneuploidy is the gain or loss of a chromosome such that the number of chromosomes is not a multiple of 23 (the human haploid number).