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Home Q & A Board Biology-Related Homework Help Anatomy and Physiology
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tperkins9295 tperkins9295
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10 years ago
A. Its ancestral function is no longer needed.
B. The notochord is "used up" in the development of the brain.
C. Because of natural selection, the notochord was replaced over time with a cartilaginous support.
D. As embryonic development continues, the notochord is replaced by a vertebral column, which also provides support and attachment sites for muscles.
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TPDarTPDar
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