which of the following technique is in-vivo?

Options

A. ZIFT
B. GIFT
C. ICSI
D. IUT

Answer

To determine which of the following techniques is in vivo, we need to understand the definitions and characteristics of in vivo and in vitro techniques in the context of assisted reproductive technologies (ART).

### Step-by-Step Solution:

1. **Understanding In Vivo vs. In Vitro**:
- In vivo techniques are those that occur inside a living organism, while in vitro techniques are performed outside the body, typically in a laboratory setting.

2. **Identifying the Techniques**:
- The question likely presents multiple options related to reproductive technologies. Common techniques include:
- Zygote Intra Fallopian Transfer (ZIFT)
- Intrauterine Transfer (IUT)
- Intracytoplasmic Sperm Injection (ICSI)
- Gamete Intrafallopian Transfer (GIFT)

3. **Analyzing Each Technique**:
- **ZIFT**: This involves transferring a zygote (fertilized egg) into the fallopian tube after it has been created in vitro. Therefore, it is not an in vivo technique.
- **Intrauterine Transfer (IUT)**: This involves transferring an embryo into the uterus after it has been created in vitro. Thus, it is also not an in vivo technique.
- **Intracytoplasmic Sperm Injection (ICSI)**: This technique involves injecting a sperm directly into an egg in vitro, which means it is not an in vivo technique.
- **GIFT**: This technique involves transferring gametes (sperm and egg) directly into the fallopian tubes of a female. Since this process occurs inside the body, it qualifies as an in vivo technique.

4. **Conclusion**:
- Based on the analysis, the correct answer to the question "which of the following technique is in vivo?" is **GIFT (Gamete Intrafallopian Transfer)**.