During in utero (fetal)development of the ovary,which of these occurs?
A)Cell division of primary oogonia results in the production of 2 to 4 million primary oocytes,which are present at birth.
B)Cell division of primary oogonia,which all complete the first meiotic division before birth.
C)Cell division of primary oogonia,which all complete both meiotic divisions before birth.
D)The mitotic division of primary and secondary oocytes produces cells with 23 chromosomes each.
E)A single primary oogonium remains dormant,which then undergoes rapid mitosis after birth.

Question

Quizplus · Accepted Answer

During fetal development of the ovary, cell division of primary oogonia results in the production of 2 to 4 million primary oocytes, which are present at birth. These primary oocytes then arrest in the prophase of the first meiotic division and remain dormant until puberty. Only then does one primary oocyte complete its first meiotic division and become a secondary oocyte.

During in Utero (Fetal)development of the Ovary,which of These Occurs