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dihybrid crosses

What statements describe a host organism?

What do all macromolecules have in common with each other? oa. they all are formed from the same elements.ob. they all have major roles in cell membranesoc. they all act as catalysts in the body.od. they all have peptide bonds between carbon atoms.

The similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between organisms in both locations?