Purines base-pair with purines, and pyrimidines base-pair with pyrimidines. True False
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A purine on one strand of the DNA is always paired with a pyrimidine on the other strand. True False
Hari Krishna N.
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
Sri K.
Explain how we know base pairing takes place between a purine and pyrimidine. Purine and pyrimidine a Only the pairing between a purine and pyrimidine can explain the uniform diameter of the DNA double helix. Adenine and thymine form two hydrogen bonds, whereas cytosine and guanine form three hydrogen bonds. b Only the pairing between a purine and pyrimidine can explain the non-uniform diameter of the DNA double helix. Adenine and thymine form two hydrogen bonds, whereas cytosine and guanine form three hydrogen bonds. c Only the pairing between a purine and pyrimidine can explain the uniform diameter of the DNA double helix. Adenine and thymine form three hydrogen bonds, whereas cytosine and guanine form two hydrogen bonds. d Only the pairing between a purine and pyrimidine can explain the uniform diameter of the DNA double helix. Adenine and thymine form two disulfide bonds, whereas cytosine and guanine form three hydrogen bonds.
Jorge V.
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