In the IVF technique , which of the following is transferred into the fallopian tube ?

Options

A. Zygote
B. Embryo upto 8 blastomere stage
C. Embryo in 32 cell stage
D. Either (A) or (B)

Answer

To solve the question regarding what is transferred into the fallopian tube during the IVF (In Vitro Fertilization) technique, we can break down the information systematically.

### Step-by-Step Solution:

1. **Understanding IVF**: In Vitro Fertilization (IVF) is a process where fertilization occurs outside the body. Eggs (oocytes) are collected from the ovaries and fertilized by sperm in a laboratory setting.

2. **Identifying the Transfer Stage**: After fertilization, the resulting zygote or embryo needs to be transferred into the fallopian tube or uterus. The question specifically asks about the fallopian tube.

3. **Options Analysis**:
- **Option A: Zygote** - A zygote is the initial cell formed when a sperm fertilizes an egg. In some techniques (like ZIFT - Zygote Intrafallopian Transfer), the zygote is indeed transferred to the fallopian tube.
- **Option B: Embryo up to 8 blastomere stage** - An embryo at this stage consists of several cells (up to 8). This stage is also commonly transferred to the fallopian tube in IVF.
- **Option C: Embryo in 32 cell stage** - This stage is typically too advanced for transfer to the fallopian tube in standard IVF procedures.
- **Option D: Both A and B** - This option suggests that both the zygote and the embryo up to the 8 blastomere stage can be transferred.

4. **Conclusion**: Given the information, both the zygote and the embryo up to the 8 blastomere stage can be transferred into the fallopian tube during IVF. Therefore, the correct answer is **Option D: Both A and B**.

### Final Answer:
**Both A and B (Zygote and Embryo up to 8 blastomere stage)** are transferred into the fallopian tube during the IVF technique.