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Question 75

Which pair of sex chromosomes does a human male have in his body cells?

  1. Two Y chromosomes
  2. Two X chromosomes
  3. One X chromosome and one Y chromosomeCorrect answer
  4. One Y chromosome only, without a partner

Explanation

A male holds one copy of each kind, so unlike every other pair in his cells the two sex chromosomes do not match each other. A pair of Y chromosomes does not occur in humans at all, and a matching pair of X chromosomes is the female arrangement rather than the male one.

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Question 75: Which pair of sex chromosomes does a human male have in his… · Genetics Basics · Questena