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Vikki [24]
4 years ago
8

Which trait was most important in the development and advancement of modern fish?

Biology
2 answers:
ddd [48]4 years ago
6 0
The most important trait that modern fish had developed was the transformation of their skeleton from cartilage to bones. This was called ossification. Eventually, bony fishes and sharks dominated the waters because their body structure development which helped them as swimmers is advanced compared to earlier fishes. 
koban [17]4 years ago
4 0

It is the lower jaw

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