The reproductive cycle in the female primates is known as .........

Answer

**Step-by-Step Solution:**

1. **Identify the Reproductive Cycle in Primates:**
- The reproductive cycle in female primates is specifically referred to as the menstrual cycle.

2. **Understand the Nature of the Menstrual Cycle:**
- The menstrual cycle is characterized by hormonal and reproductive tissue changes that occur in adult female mammals during their reproductive years.

3. **Frequency of the Menstrual Cycle:**
- This cycle typically repeats at an average interval of about 28 to 29 days, although it can sometimes extend to around 35 days.

4. **Phases of the Menstrual Cycle:**
- The menstrual cycle consists of four main phases:
- **Menstruation:** The shedding of the uterine lining.
- **Follicular Phase:** The phase where follicles in the ovaries mature.
- **Ovulation:** The release of a mature egg from the ovary.
- **Luteal Phase:** The phase following ovulation where the body prepares for a possible pregnancy.

5. **Importance of the Menstrual Cycle:**
- The menstrual cycle is essential for sexual reproduction as it is necessary for the production of eggs.

**Final Answer:**
The reproductive cycle in female primates is known as the **menstrual cycle**.

---