__________ is a specialized procedure to form an embryo in the laboratory in which a sperm is directly injected into the ovum.
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → ICSI
These are assisted reproductive technologies for couples who cannot have a child in the natural way.
(1) ZIFT — Incorrect. In zygote intra fallopian transfer, the zygote or an early embryo with up to 8 blastomeres is placed in the fallopian tube.
(2) GIFT — Incorrect. In gamete intra fallopian transfer, the ovum from a donor is placed in the fallopian tube of a female who cannot produce one but can provide a suitable place for fertilisation.
(3) ICSI — Correct. In intra cytoplasmic sperm injection a single sperm is injected directly into the ovum in the laboratory. The embryo is then transferred.
(4) IUT — Incorrect. Intra uterine transfer places an embryo with more than 8 blastomeres into the uterus.
NCERT Extract:
Infertility – …
