Question

Complete the sentences to describe how nitrogen bases pair up in DNA.

Adenine always pairs with
Cytosine always pairs with
.

Answer 1

first one is thyamine

the second one is guanine

Step-by-step explanation:

Answer 2

Step-by-step explanation:

Adenine always pairs with thyamine or uracil also.

Cytosine always pairs with guanine

Hope this helps!!