alleryAfter fertilisation, the resulting zygote first undergoes cleavage as it moves through the:
AIsthmus of the oviduct (toward the uterus)
BCervix
CUreter
DVagina
Answer & Solution
Correct answer: A. Isthmus of the oviduct (toward the uterus)
Mitotic cleavage begins as the zygote moves through the **isthmus of the oviduct** toward the uterus, producing 2, 4, 8, 16-cell stages.
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