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Biology, 01.03.2020 00:21 alisa1600000

An embryo grows into a multicellular organism made of a wide variety of cell types. How does the variation in cell types occur?
A. Each type of specialized cell produces another type in an ordered sequence.
B. Muscle and connective tissue in the embryo produce the other types of specialized cells.
C. Embryonic stem cells divide to produce all types of specialized cells.
D. Embryonic stem cells divide to produce nerve cells, which produce all types of specialized cells.

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