Q:

What is the chromosome complement of a sperm?

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What is the chromosome complement of a sperm? 


  1. 46 chromosomes (23 pairs including a pair of Y chromosomes).
  2. 46 chromosomes (22 pairs plus one X chromosome and one Y).
  3. 23 chromosomes including one X chromosome OR one Y.
  4. 23 chromosomes including one X chromosome AND one Y.

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C: Sperm are haploid (have 23 chromosomes) so that when they fuse with the egg (also with 23 chromosomes), the zygote has 46 chromosomes. The X or Y chromosome of the sperm, in conjunction the X of the egg, then determine the sex of the baby. 

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