Multiple choice

(TRUE or FALSE) On a karyogram, the sex of a child can be deduced from the 21st chromosomes.

  1. False, it can be deduced from the first pair of chromosomes.

  2. True, 21st set of chromosomes contains the XY chromosomes.

  3. False, sex can be determined by the X and Y chromosomes.

  4. True, since the 21st set of chromosomes is the last set.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In a human karyogram, the sex of an individual is determined by the 23rd pair of chromosomes (the sex chromosomes, X and Y), not the 21st pair.

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