During pregnancy, the production of ova in ovary is prevented by

Options

A. estrogen
B. relaxin
C. progesterone
D. prolactin

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks which hormone prevents the production of ova (eggs) in the ovaries during pregnancy.

2. **Identifying the Hormones**: The options provided are:
- A) Estrogen
- B) Relaxin
- C) Progesterone
- D) Prolactin

3. **Analyzing Each Hormone**:
- **Estrogen**: This hormone is involved in the development of female secondary sexual characteristics and the regulation of the menstrual cycle, but it does not primarily prevent ovulation during pregnancy.
- **Relaxin**: This hormone is primarily involved in childbirth, helping to relax the pelvic ligaments and cervix, but it does not play a role in preventing ovulation.
- **Progesterone**: This is a key hormone during pregnancy. It is secreted by the corpus luteum and is responsible for maintaining the uterine lining and preventing the release of eggs (ovulation) during pregnancy.
- **Prolactin**: This hormone is mainly responsible for milk production and the development of mammary glands, and it does not prevent ovulation.

4. **Conclusion**: Since progesterone is the hormone that prevents the release of eggs during pregnancy, the correct answer is **C) Progesterone**.

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