In assisted reproductive technology where gametes have been fertilized in vitro, which of the following is practicable for embryo transplantation in Fallopian tube

Only embryo up to 8 blastomeres if zygote is not transplanted.

Only zygote is transplanted not embryo

Either embryo or zygote with 8 blastomere phase transplanted

Morulla with 8-24 celled stage is transplanted in Fallopian tube.

Solution

Only embryo up to 8 blastomeres if zygote is not transplanted.

In in vitro fertilization (IVF-fertilization outside the body in almost similar conditions as that in the body) followed by embryo transfer (ET), ova from the wife/donor (female) and sperms from the husband/donor (male) are collected and are induced to form zygote under simulated conditions in the laboratory. The zygote or early embryos (with upto 8 blastomeres) could then be transferred into the Fallopian tube (ZIFT-Zygote Intra Fallopian Transfer) and embryos with more than 8