Multiple Choice
How many daughter cells are produced from a single diploid cell at the end of meiosis II?
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12. Meiosis
Introduction to Meiosis
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Which of the following correctly lists the four cell types produced during oogenesis in the order they appear?
A
Oogonium, primary oocyte, secondary oocyte, ovum
B
Oogonium, ovum, primary oocyte, secondary oocyte
C
Oogonium, secondary oocyte, primary oocyte, ovum
D
Primary oocyte, oogonium, ovum, secondary oocyte
Verified step by step guidance1
Understand the process of oogenesis, which is the formation and development of the female gametes (eggs) in animals. It involves a sequence of cell types that develop in a specific order.
Begin with the oogonium, which is the diploid stem cell that undergoes mitosis to produce primary oocytes. This is the first cell type in the sequence.
The primary oocyte is formed from the oogonium and enters meiosis I. It pauses in prophase I until puberty, when hormonal signals trigger its continuation. This is the second cell type in the sequence.
The primary oocyte completes meiosis I to form the secondary oocyte and a polar body. The secondary oocyte is the third cell type in the sequence and begins meiosis II but pauses in metaphase II until fertilization.
Upon fertilization, the secondary oocyte completes meiosis II to form the ovum (mature egg) and another polar body. The ovum is the fourth and final cell type in the sequence.
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