Biology · Reproductive Health · NEET
Inside the body. In GIFT, only the gamete (a donor ovum) is placed into the woman's fallopian tube, so fertilisation happens naturally inside her body (in vivo). This is the key difference from IVF, ZIFT and IUT, where fertilisation is done in the lab (in vitro).
An egg (ovum), i.e. a gamete. NCERT is exact: GIFT = 'transfer of an ovum collected from a donor into the fallopian tube.' No zygote and no embryo is transferred. Remember the name: Gamete Intra Fallopian Transfer.
GIFT is used for a female who cannot produce her own ovum but can still provide a suitable environment for fertilisation and further development of the embryo. So she has a healthy uterus and fallopian tube but lacks a usable egg — a donor egg is placed into her fallopian tube.
In GIFT a GAMETE (egg) is transferred and fertilisation occurs inside the body. In ZIFT a ZYGOTE or early embryo (up to 8 blastomeres), already formed in the lab, is transferred into the fallopian tube. GIFT = egg in, ZIFT = zygote in.
No. In IVF the egg and sperm are fused OUTSIDE the body in the lab to form a zygote (test-tube baby method). In GIFT no lab fertilisation is done — the donor egg is placed into the fallopian tube and sperm fertilises it naturally inside the woman's body.
Try the real previous-year questions from this chapter — each with the answer and a full solution.
GIFT stands for Gamete Intra Fallopian Transfer. A gamete (donor ovum) is transferred into the fallopian tube.
A donor's ovum (egg), which is a gamete. It is placed into the fallopian tube of the recipient female.
When a woman cannot produce her own ovum but can provide a suitable environment (healthy fallopian tube and uterus) for fertilisation and further development of the embryo.
Inside the woman's body (in vivo), in the fallopian tube — not in a laboratory dish.
Yes. GIFT is one of the ART methods listed by NCERT along with IVF, ZIFT, IUT, ICSI and artificial insemination (IUI).
