Which of the following does NOT correctly describe the structure of a B-DNA double helix?
Group of answer choices
one helical rotation has a rise of 34 Angstroms
antiparallel strands
base pairs are located in the center of the helix
phosphate groups located in the core of the helix
right-handed helix
Phosphate groups located in the core
This option is incorrect because sugar and phosphate together form the backbone of the DNA. They are attached to each other by phosphodiester bond. The core of the double stranded DNA is made up of nitrogenous base which pair with each other according to complementary base pairing rules. Adenine pairs with thymine by two hydrogen bonds and cytosine with guanine by 3 hydrogen bonds.
Please look at the structure of double stranded DNA -
Please give a good rating.
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