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DNA and RNA are similar in some respects and different in others. Which of the following statements is not accurate about their similarities?
A.Both DNA and RNA nucleotides contain the nitrogen bases adenine, cytosine, and guanine.
B. Both DNA and RNA always double helices.
C.Both DNA and RNA contain monosaccharide sugars on their respective nucleotides.
D.Both DNA and RNA are involved in the "Central Dogma" of biology.
e.Both DNA and RNA contain phosphate groups on their respective nucleotides.

Answer :

DNA is usually double stranded and most cellular RNA is single stranded. 1)In DNAthe pentose sugar is deoxyribose.Whereas in RNA the pentose sugar is ribose. 2)In DNA the common organic bases are adenine,guanine,cytosine and thymine.Whereas in RNA the common organic bases are adenine,guanine,cytosine and uracil.Dec 9, 2009
scme1702
B.
RNA molecules are usually present as a single helix.

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