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S. No.
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Column I
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S. No.
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Column II
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A.
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Cleavage
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1.
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Outer layer of the blastocyst that attaches to the endometrium during implantation.
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B.
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Implantation
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2.
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Mitotic divisions of the zygote in quick succession.
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C.
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Inner cell mass
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3.
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Embedding of the blastocyst in the endometrium of uterus.
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D.
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Trophoblast
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4.
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Release of secondary oocyte from the ovary.
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E.
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5.
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Group of cells attached to one end of trophoblast that differentiate into embryo proper.
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