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2014-07-23T20:53:34+08:00

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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

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