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Komok [63]
3 years ago
15

What led to the development of body systems?​

Biology
1 answer:
valentinak56 [21]3 years ago
8 0
In comparison to the embryo, the fetus has more recognizable external features and a more complete set of developing organs. The entire process of embryonic development involves coordinated spatial and temporal changes in gene expression, cell growth and cellular differentiation.
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