The process of transferring the blastomeres up to 8 cells into the fallopian tube of recipient female is called:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → Zygote intra fallopian transfer
In test tube baby programmes the egg and sperm are joined outside the body (in vitro fertilisation), and the zygote or embryo is then placed in the female. The place of transfer and the age of the embryo give the method its name.
(1) Zygote intra fallopian transfer — Correct. In ZIFT the zygote, or an early embryo with up to 8 blastomeres, is transferred into the fallopian tube.
(2) Gamete intra fallopian transfer — Incorrect. In GIFT the gametes are put into the fallopian tube, for example the ovum from a donor. No embryo is formed outside.
(3) Intra uterine transfer — Incorrect. In IUT an embryo with more than 8 blastomeres is placed in the uterus, not in the fallopian tube.
(4) Intra uterine insemination — Incorrect. In IUI the semen is put into the uterus. It carries sperms only, with no blastomeres.
NCERT Extract:
Infertility – …
