In assisted reproductive techology ,after in vitro fertilization what is transplanted in the fallopian tube?

Options

A. Embryo upto 8 blastomeres , if zygote is not tranplanted
B. Blastula is transplanted
C. only zygote is tranplated
D. Morula in 8-24 celled stage is transplanted .

Answer

**Step-by-Step Solution:**

1. **Understanding Assisted Reproductive Technology (ART):**
- ART is a medical procedure used to treat infertility in females. One of the most common forms of ART is In Vitro Fertilization (IVF), where fertilization occurs outside the female body in a laboratory setting.

2. **In Vitro Fertilization Process:**
- In IVF, eggs are retrieved from the female's ovaries and fertilized with sperm in a lab. This results in the formation of a zygote.

3. **Transplantation After IVF:**
- After the zygote is formed, it can be transplanted into the female's reproductive system. The specific procedure for this is known as Zygote Intra-Fallopian Tube Transfer (ZIFT).

4. **What is Transplanted?**
- In ZIFT, the fertilized zygote is transferred into the fallopian tube of the surrogate mother. This is done because the fallopian tube is a natural environment for the zygote to develop into an embryo.

5. **Optimal Stage for Transfer:**
- The best stage for transferring the zygote is when it has developed into an embryo with up to 8 blastomeres (cells). At this stage, the embryo is ready for implantation.

6. **Evaluating Options:**
- Option 1: "Embryo up to 8 blastomeres" - This is correct as this is the optimal stage for implantation.
- Option 2: "Blastula is transplanted" - Incorrect, as a blastula contains more than 8 cells.
- Option 3: "Only zygote is transplanted" - Incorrect, since we are referring to the embryo stage.
- Option 4: "Morula in 8 to 24 cell stages transplanted" - Incorrect, as morula refers to a stage before the blastocyst.

7. **Conclusion:**
- The correct answer is that an "embryo up to 8 blastomeres" is transplanted into the fallopian tube after in vitro fertilization.

**Final Answer:**
- The correct answer is: **Embryo up to 8 blastomeres.**

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