Transfer of an ovum collected from a donor into fallopian tube is called _____________.
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → GIFT
Option (1) ZIFT — Incorrect. In zygote intra fallopian transfer, a zygote or early embryo (up to 8 blastomeres) made in vitro is transferred, not an ovum.
Option (2) ICSI — Incorrect. In intra cytoplasmic sperm injection a sperm is injected directly into the ovum in the laboratory.
Option (3) GIFT — Correct. In gamete intra fallopian transfer, an ovum from a donor is placed in the fallopian tube of a female who cannot produce one but can support fertilisation and development.
Option (4) IVF — Incorrect. In vitro fertilisation is fertilisation outside the body, in the laboratory; it is the step before ZIFT or IUT.
Note: A similar question was also asked in CUET (UG) 2025 on 26-05-2025 (Slot 2).
NCERT Extract:
Infertility – “… Transfer of an ovum collected from a donor into the fallopian tube (GIFT – gamete intra fallopian transfer) of another female who cannot produce one, but can provide suitable environment for fertilisation and further development is another method attempted. Intra cytoplasmic sperm injection (ICSI) is another specialised procedure to form an embryo in the laboratory in which a sperm is directly injected into the ovum.”