In which of the following techniques, the embryos are transferred to assist those females who cannot conceive?
- GIFT and ICSI
- ZIFT and IUT
- GIFT and ZIFT
- ICSI and ZIFT
Answer
(2) ZIFT and IUT
Solution
As per NCERT, in test tube baby programme the zygote or early embryo (up to 8 blastomeres) is transferred into the fallopian tube (ZIFT – zygote intra fallopian transfer) and embryos with more than 8 blastomeres into the uterus (IUT – intra uterine transfer).
GIFT transfers an ovum (a gamete) into the fallopian tube, and in ICSI a sperm is directly injected into the ovum; no embryo is transferred in these.
Answer: (2)