This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
A DNA is composed of chains of nucleotides that are built in a sugar and phosphate backbone and are wrapped around each other in the form of double helix. There are four bases that are supported by the backbone: the cytosine, adenine, guanine and thymine..

That's my answer :))) Ganito ba yun? Baka mali eh.. xD

2 5 2
aus na yn thank you :D
You're welcome :))