Respuesta :

gabriellarussell45

Answer:

DNA are cytosine and thymine

Explanation:

in RNA, they are cytosine and uracil. Purines are larger than pyrimidines because they've a two-ring shape whilst pyrimidines simplest have a unmarried ring.

annie1799

Answer:

Cytosine and Thymine

Explanation:

Of the four DNA bases, (C, T, A and G), C and T are pyrimidines.  The way I remember it is, C, U (which is only in RNA) and T are "pyrimidines", which has more than 3 syllables, hence there are 3 bases in this category, as compared to purines which only contain 2 (A and G).  Hope that helps and it's not confusing

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