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book Biology of Humans 6th Edition by Judith Goodenough,Betty McGuire cover

Biology of Humans 6th Edition by Judith Goodenough,Betty McGuire

Edition 6ISBN: 978-0134324876
book Biology of Humans 6th Edition by Judith Goodenough,Betty McGuire cover

Biology of Humans 6th Edition by Judith Goodenough,Betty McGuire

Edition 6ISBN: 978-0134324876
Exercise 19
The yolk sac
A) is a primary source of nourishment for human embryos.
B) is the embryo's major contribution to the placenta.
C) contains primordial germ cells.
D) encloses the embryo in a fluid-filled sac.
Explanation
Verified
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It is the chorion, not the yolk sac, whi...

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Biology of Humans 6th Edition by Judith Goodenough,Betty McGuire
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