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In vitro fertilisation is a technique that involves transfer of which one of the following into the Fallopian tube?
A
Zygote only
B
Embryo only, upto 8 cell stage
C
Either zygote or early embryo upto 8 cell stage
D
Embryo of 32 cell stage
Detailed Solution
In in vitro fertilisation (IVF), ova from the wife or donor and sperms from the husband or donor are collected and induced to form a zygote under simulated conditions in the laboratory. This is followed by embryo transfer (ET).
The zygote or early embryos with up to 8 blastomeres are transferred into the Fallopian tube; this is ZIFT (zygote intra Fallopian transfer).
Embryos with more than 8 blastomeres are transferred into the uterus; this is IUT (intra uterine transfer).
Hence IVF involves transfer of either the zygote or an early embryo up to the 8-cell stage into the Fallopian tube.
The zygote or early embryos with up to 8 blastomeres are transferred into the Fallopian tube; this is ZIFT (zygote intra Fallopian transfer).
Embryos with more than 8 blastomeres are transferred into the uterus; this is IUT (intra uterine transfer).
Hence IVF involves transfer of either the zygote or an early embryo up to the 8-cell stage into the Fallopian tube.