Question

Which ONE of the following is NOT part of the pre-embryo? Select one: Maternal Determinants. Cords...

Which ONE of the following is NOT part of the pre-embryo?

Select one:

Maternal Determinants.

Cords of trophoblastic cells.

Pronucleus.

Blastomere.

Human Chorionic Gonadotropin.

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Homework Answers

Answer #1

Pre-embryo is the stage of the embryo just after fertilization. It lasts for first two weeks after fertilization.

Blastomeres, trophoblast cells, maternal determinants, HCG are all part of pre-embryo.

Once the pre-embryo settles in the endometrium HCG is formed.

Pro-nucleus is the nucleus of the sperm and ovum under going fertilization. Fertilization results in the formation of diploid zygote nucleus. So the pro-nucleus is absent in pre-embryo.

Right option is Pronucleus.

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