Question

How many total chromosomes does a human zygote have, and how are they divided between the parents?

Options

• 23 total, all from the mother.

• 46 total, 23 from each parent.

• 46 total, 40 from the mother and 6 from the father.

• 23 pairs, only contributed by the father.

Answer 1

46 total, 23 from each parent.

Explanation:

The notes state the fertilized egg (zygote) has 46 chromosomes (23 pairs), contributed equally (23 each) by the sperm and the ovum.