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solniwko [45]
3 years ago
10

What is the name of the stiff nonconducting rod that develops down the back of the embryo of all chordates?

Biology
2 answers:
suter [353]3 years ago
8 0
The answer is D. notochord 
Mariana [72]3 years ago
7 0
Totally agree.....Its the notochord
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