During menstrual cycle, which hormone shows dual peak ?

Options

A. Estrogen - Both peaks during first half of menstrual cycle .
B. Estrogen - One peak during first half and second peak during second half of menstrual cycle.
C. Progesterone - Both peaks during first half of menstrual cycle.
D. Progesterone - One peak during first half and second peak during second half of menstrual cycle

Answer

### Step-by-Step Solution:

1. **Understanding the Menstrual Cycle**: The menstrual cycle is divided into phases: the menstrual phase, follicular phase, ovulation, and luteal phase. Each phase is characterized by changes in hormone levels.

2. **Identifying Key Hormones**: The primary hormones involved in the menstrual cycle are estrogen and progesterone. Estrogen is produced mainly by the developing follicles, while progesterone is produced by the corpus luteum after ovulation.

3. **Observing Hormone Peaks**:
- During the **first half** of the menstrual cycle (follicular phase), estrogen levels rise as the follicles develop. This is the **first peak** of estrogen.
- Around the **14th day**, ovulation occurs, which is the release of an egg from the ovary.
- In the **second half** of the cycle (luteal phase), after ovulation, estrogen levels rise again due to the activity of the corpus luteum, leading to a **second peak** of estrogen.

4. **Conclusion**: Since estrogen is the hormone that shows two peaks during the menstrual cycle—one during the follicular phase and another during the luteal phase—it is the correct answer to the question.

5. **Final Answer**: The hormone that shows a dual peak during the menstrual cycle is **Estrogen**.