The pyrimidine bases present in DNA are

  • Option 1)

    cytosine and adenine

  • Option 2)

    cytosine and guanine

  • Option 3)

    cytosine and thymine

  • Option 4)

    cytosine and uracil.

 

Answers (1)

As we learnt in

Deoxyribonucleic acid (DNA) -

Made up of nucleotides consisting of pentose sugar which is \beta-D-2- deoxyribose, Phosphoric acid and bases (Adenine , Guanine , cytosine and thymine)

-

 

 Pyrimidine bases in DNA = Cytosine +Thymine

Purine bases in DNA = Adenine+Guanine


Option 1)

cytosine and adenine

This option is incorrect

Option 2)

cytosine and guanine

This option is incorrect

Option 3)

cytosine and thymine

This option is correct

Option 4)

cytosine and uracil.

This option is incorrect

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