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Which one of the following is a correct ...

Which one of the following is a correct developmental sequence?

A

Ovum-sperm, blastocyst, zygote

B

Blastocyst, ovum-sperm, zygote

C

Blastocyst, zygote, ovum-sperm

D

Ovum-sperm, zygote, blastocyst

Text Solution

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The correct Answer is:
D

The fertilised egg (zygote) divided repeatedly and moves down the fallopian tube to the uterus. Between 5 and 8 days after fertilisation, the blastocyst attaches to the lining of the uterus, usually near the top.
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