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Question
Similarity between DNA and RNA is that both have
Similarity between DNA and RNA is that both have
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Solution
The correct option is B Polymers of nucleotides
Similar sugars
The sugar present in DNA is deoxyribose whereas the sugar present in RNA is ribose. Thus, option A is incorrect.
Similar mode of replication
DNA replicates to make copies of itself but RNA does not replicate. RNA is formed from DNA by the process of transcription. Thus option B is incorrect.
Similar pyrimidines
The pyrimidines found in DNA are cytosine and thymine whereas the pyrimidines found in RNA are cytosine and uracil.
Thymine is methylated uracil and both thymine and uracil are complementary to adenine.
Thus, option C is incorrect.
Polymers of nucleotides
● Both DNA and RNA are polynucleotide chains, i.e, they are polymers made up of repeating units of nucleotides.
● The nucleotides are composed of a pentose sugar, a nitrogenous base attached to the 1’ carbon of the sugar and a phosphate group attached to the 5’ carbon of the sugar.
● Adjacent nucleotides are connected with the help of phosphodiester bonds.
Thus option D is correct.
Final answer:
(d) Polymers of nucleotides
Similar sugars
The sugar present in DNA is deoxyribose whereas the sugar present in RNA is ribose. Thus, option A is incorrect.
Similar mode of replication
DNA replicates to make copies of itself but RNA does not replicate. RNA is formed from DNA by the process of transcription. Thus option B is incorrect.
Similar pyrimidines
The pyrimidines found in DNA are cytosine and thymine whereas the pyrimidines found in RNA are cytosine and uracil.
Thymine is methylated uracil and both thymine and uracil are complementary to adenine.
Thus, option C is incorrect.
Polymers of nucleotides
● Both DNA and RNA are polynucleotide chains, i.e, they are polymers made up of repeating units of nucleotides.
● The nucleotides are composed of a pentose sugar, a nitrogenous base attached to the 1’ carbon of the sugar and a phosphate group attached to the 5’ carbon of the sugar.
● Adjacent nucleotides are connected with the help of phosphodiester bonds.
Thus option D is correct.
Final answer:
(d) Polymers of nucleotides
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