Nucleic acids are polynucleotides with building blocks that are made of a nitrogenous base, a pentose, and a phosphate group. RNA makes use of the pentose, ribose, while DNA uses deoxyribose. In addition to this, DNA is also know for its usual double-stranded character, the nucleotide bases pair up based on complementarity. This happens as a purine-pyrimidine base pairing. This can be proven by a number of points.
Which of the following does not provide evidence to support the conclusion that nitrogenous bases pair in specific combinations?
A. a purine-purine pair is too wide to account for the 2-nm diameter of the double helix.
B. The sugar-phosphate backbone is held together by phosphodiester bonds.
C. The X-ray data suggested that the double helix had a uniform diameter.
D. Whenever one strand of DNA has a C, the partner strand has a G.
E. A pyrimidine-pyrimidine pair is too narrow o account for the 2nm-diameter of the double helix.
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Nucleic Acids concept. You can view video lessons to learn Nucleic Acids. Or if you need more Nucleic Acids practice, you can also practice Nucleic Acids practice problems.