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The higher invertebrates are divided into two evolutionary lines, protostomes and deuterostomes. This division is based on which developmental feature?

The higher invertebrates are divided into two evolutionary lines, protostomes and deuterostomes. This division is based on which developmental feature?
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The higher invertebrates are divided into two evolutionary lines, protostomes and deuterostomes. This division is based on which developmental feature?

User Abhik Bose Pramanik
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7 votes

Answer:

the answer is A

Step-by-step explanation:

User Firas Shrourou
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whether the mouth is developed from the first or second opening.
User Stuart Gough
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