Embryo with more than 16 blastomeres formed due to in vitro fertilization in transferred into :

Options

A. Uterus
B. Fallopian tube
C. Fimbriae
D. Cervix

Answer

**Step-by-Step Solution:**

1. **Understanding In Vitro Fertilization (IVF):**
- In vitro fertilization is a process where an egg is fertilized by sperm outside the body, typically in a laboratory setting.

2. **Formation of the Zygote:**
- After fertilization, the fertilized egg (zygote) begins to divide and form multiple cells, known as blastomeres.

3. **Blastomere Stages:**
- The number of blastomeres increases as the zygote divides. An embryo with more than 16 blastomeres indicates that it has developed significantly.

4. **Transfer Techniques:**
- There are two main techniques for transferring embryos after IVF: Zygote Intra-Fallopian Transfer (ZIFT) and Intra-Uterine Transfer (IUT).
- ZIFT typically involves transferring early zygotes or embryos at the 8-cell stage into the fallopian tubes.
- In contrast, embryos that are more developed (more than 8 cells, specifically more than 16 cells) should be transferred directly to the uterus.

5. **Conclusion:**
- Since the question specifies an embryo with more than 16 blastomeres, this embryo should be transferred to the uterus, as this is the appropriate site for implantation and further development.

**Final Answer:**
The embryo with more than 16 blastomeres formed due to in vitro fertilization is transferred into the **uterus**.

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