The method of directly injecting a sperm into ovum in assisted reproductive technology is called :

Options

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

Answer

**Step-by-Step Solution:**

1. **Understanding Assisted Reproductive Technology (ART):** ART encompasses various techniques used to aid individuals in achieving pregnancy. It includes methods that involve the manipulation of eggs and sperm.

2. **Identifying the Techniques:**
- **GIFT (Gamete Intrafallopian Transfer):** In this method, both sperm and egg are placed in the fallopian tube, where fertilization occurs naturally.
- **ZIFT (Zygote Intrafallopian Transfer):** Here, a zygote (fertilized egg) is placed in the fallopian tube after fertilization has occurred in the lab.
- **ICSI (Intracytoplasmic Sperm Injection):** This technique involves directly injecting a single sperm into an egg, which is particularly useful when sperm quality is poor.
- **ET (Embryo Transfer):** This is the process of transferring an embryo into the uterus after fertilization has occurred.

3. **Focusing on the Question:** The question specifically asks for the method of directly injecting a sperm into an ovum.

4. **Selecting the Correct Answer:** Among the options given:
- GIFT involves placing gametes in the fallopian tube.
- ZIFT involves placing a zygote in the fallopian tube.
- ICSI involves the direct injection of sperm into the egg.
- ET involves transferring an embryo.

The correct answer is **ICSI (Intracytoplasmic Sperm Injection)**, as it directly involves injecting a sperm into an ovum.

**Final Answer:** The method of directly injecting a sperm into an ovum in assisted reproductive technology is called **ICSI (Intracytoplasmic Sperm Injection)**.

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