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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332

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BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332
Textbook Problem
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Ovulation releases a(n) ___ into an oviduct.

  1. a. primary oocyte
  2. b. secondary oocyte
  3. c. ovum
  4. d. follicle cell

Summary Introduction

Concept introduction: Gametogenesis is the process by which male and female gametes are produced. Oogenesis, which is the production of the female gamete is a part of the female reproductive cycle. At the end of oogenesis, a single ovum is produced per month for fertilization.

Explanation

Reasons for the correct statement:

The primary oocytes are produced from the primordial germ cells during the embryonic development of the female. They are then halted during the prophase I of meiosis. Post puberty meiosis resumes the primary oocyte and becomes an ovarian follicle with layers of cell around it and completes meiosis II as a secondary oocyte. The secondary oocyte is halted at metaphase II and is not resumed until fertilization. The meiosis halted secondary oocyte is released by the ovary into the oviduct for fertilization by the sperms.

Option b. is given as “secondary oocyte”.

As, secondary oocyte is released by the ovary into the oviduct, the correct answer is option b.

Reasons for incorrect statements:

Option a...

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