Purines found both in DNA and RNA are:

  • Option 1)

    Adenine and thymine

  • Option 2)

    Adenine and guanine

  • Option 3)

    Guanine and cytosine

  • Option 4)

    Cytosine and thymine

Answers (1)

 

Nucleotide -

When a phosphaste group to {5}'- oH of a nucleoside through phosphoester linkage.

- wherein

A corresponding nucleotide (or deoxynucleotide depending upon of sugar present) is formed.

 

 

 

Nucleic acids are composed of 3 components:

Nitrogenous bases,

5 carbon sugars, and

one or more phospahte groups.

Nitrogenous bases are of two kinds i.e, purines and pyrimidines.

Adenine and guanine are purines while cytosine, thymine and uracil are pyrimidrines. In both the DNA and RNA purine are same while among pyrimidines, thymine is present in DNA and uracil in RNA.

 


Option 1)

Adenine and thymine

Option 2)

Adenine and guanine

Option 3)

Guanine and cytosine

Option 4)

Cytosine and thymine

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