The test-tube baby programme employs which one of the following techniques ?
- Intra cytoplasmic sperm injection (ICSI)
- Gamete intra fallopian transfer (GIFT)
- Intra uterine insemination (IUI)
- Zygote intra fallopian transfer (ZIFT)
Answer
(4) Zygote intra fallopian transfer (ZIFT)
Solution
As per NCERT, in the popularly known test-tube baby programme, ova from the wife/donor and sperms from the husband/donor are made to fuse in the laboratory (in vitro fertilisation).
⇒ The zygote or early embryo (up to 8 blastomeres) is then transferred into the fallopian tube — ZIFT (zygote intra fallopian transfer).
Answer: (4)