Respuesta :

Adenine always pairs with Thymine. (DNA)
Guanine always pairs with Cytosine.
(DNA)

*In the (RNA) Adenine pairs with Uracil (U).

-A and T
-C and G
-T and A
-G and C
-G and C
-G and C
-T and A
-A and T
-C and G
-T and A