A chart lists six techniques. IVF, then the transfer of an embryo of up to 8 blastomeres (ZIFT)…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
A chart lists six techniques.
- IVF, then the transfer of an embryo of up to blastomeres (ZIFT)
- IVF, then the transfer of an embryo of more than blastomeres into the uterus
- GIFT
- ICSI
- Artificial insemination (AI)
- Intra uterine insemination (IUI)
Some of these are not in the NEET text, but all of them are in NCERT.
- In how many do the ovum and the sperm meet outside the body, in a dish?
- In how many do they meet inside the body of the woman?
- In how many is something placed in the fallopian tube?
Need a reminder? The key ideaShow
In IVF, ZIFT and ICSI, the gametes meet in a dish. In GIFT, AI and IUI, they meet in the body of the woman. A zygote or an embryo of up to blastomeres goes into the fallopian tube, and a larger one goes into the uterus. If each of embryos implants with chance , on its own, the chance of none is .
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Given. Six techniques.
Plan. Follow the gametes in each technique.
Step 1. In a dish. IVF with ZIFT, IVF with transfer into the uterus, and ICSI. That is .
Step 2. Inside the body. GIFT, AI and IUI. That is .
Step 3. The fallopian tube. ZIFT places a zygote or an early embryo in it. GIFT places the ovum of a donor in it. That is .
Answer: ; ; .
Check. , so every technique is counted once.
Watch out. In AI and IUI the semen is placed in the vagina or the uterus, and the tube is not used for the transfer.
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