In the testes, a diploid spermatogonium undergoes meiosis, producing a total of four haploid sperm cells. In the ovary, a diploid oogonium undergoes meiosis to produce a single large ovum and smaller polar bodies that normally disintegrate.
-A secondary spermatocyte has 12 chromosomes. How many chromosomes will be found in the primary spermatocyte that gave rise to it?
A) 6
B) 12
C) 18
D) 24

Question

Quizplus · Accepted Answer

A primary spermatocyte is diploid and undergoes meiosis I to form two haploid secondary spermatocytes. Since a secondary spermatocyte has 12 chromosomes, the primary spermatocyte must have had 24 chromosomes before meiosis I.

In the Testes, a Diploid Spermatogonium Undergoes Meiosis, Producing a Total