NEET 2010 Biology question

In vitro fertilisation is a technique that involves transfer of which one of the following into the fallopian tube

(1)Either zygote or early embryo up to 8 cell stageCorrect
(2)Embryo of 32 cell stage
(3)Zygote only
(4)Embryo only, up to 8 cell stage

Answer: (1)

Solution

In IVF (test-tube baby programme), ova and sperms are fused in the laboratory under simulated conditions. The zygote or early embryos with up to 8 blastomeres are transferred into the fallopian tube (ZIFT), and an embryo with more than 8 blastomeres is transferred into the uterus

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Question ID VK-090628