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What is in blood that makes the different blood types ?

A) The type of enzyme(s) on the surface of the blood cell
B) The type of DNA inside
C) The chemical makeup of the blood molecule
D) The shape of the blood cell

User Krdx
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1 Answer

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(A) I’m pretty sure! Sorry if it’s wrong, I’ve tried my best! :)
User Neowinston
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