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3 votes
Question 24

in dna, the purines always bond to the

a
phosphate group.

B
DNA backbone.

C
sugar.

D
pyrimidines.

User JoDG
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1 Answer

12 votes
The answer is D.

Purines always bond with Pyrimidines because hydrogen bonds are not as strong as covalent bonds.
Because Purines always pair with Pyrimidines, the ratio between the two will always be constant in a DNA molecule.
User Pnklein
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