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May 29, 2015

Homework Help: Biology

Posted by KJG on Monday, October 20, 2008 at 10:14pm.

Which is true about the pairing of bases in the DNA molecule?

a. purines always pair with pyrimidines
b. a single ring base pairs with another single ring base
c. a double ring base pairs with another double ring base
d. purines pair with purines and pyrimidines with pyrimidines

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