The method where an ovum is transferred from a donor into the fallopian tube of another female is _____.
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → GIFT
Option (1) IUI — Incorrect. In intra-uterine insemination, semen from the husband or a donor is put into the vagina or uterus of the female. No ovum is transferred.
Option (2) ICSI — Incorrect. In intra cytoplasmic sperm injection, a sperm is injected directly into the ovum in the laboratory to form an embryo.
Option (3) GIFT — Correct. Gamete intra fallopian transfer helps a female who cannot produce an ovum but can give a suitable place for fertilisation and development.
Option (4) ZIFT — Incorrect. In zygote intra fallopian transfer, the ovum is fertilised in the laboratory first. Then the zygote or early embryo (up to 8 blastomeres) is put into the fallopian tube.
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.”