By the end of meiosis I of oogenesis,an oogonium becomes
A)an ovum and a tropical body.
B)a secondary oocyte and a polar body.
C)two polar bodies of equal size.
D)two diploid cells.

Question

Quizplus · Accepted Answer

By the end of meiosis I in oogenesis, an oogonium becomes a secondary oocyte (a haploid cell with the majority of the cytoplasm) and a polar body (a smaller haploid cell). This is because in meiosis I of oogenesis, the primary oocyte undergoes reduction division to form a secondary oocyte and a polar body, while retaining the same amount of genetic information (23 chromosomes) as the original oogonium. The secondary oocyte will undergo meiosis II only if it is fertilized by a sperm, resulting in the formation of a mature ovum and another polar body.

By the End of Meiosis I of Oogenesis,an Oogonium Becomes