36. In vertebrate animals, spermatogenesis and oogenesis differ, in that
(A) oogenesis begins at the onset of sexual maturity, whereas spermatogenesis happens in embryonicdevelopment.
(B) oogenesis produces four haploid cells, whereas spermatogenesis produces only one functionalspermatozoon.
(C) cytokinesis is unequal in oogenesis, whereas it is equal in spermatogenesis.
(D) spermatogenesis is not completed until after fertilization occurs, but oogenesis is completed by thetime a girl is born.