From Google:
DNA is made of chemical building blocks called nucleotides. These building blocks are made of three parts: a phosphate group, a sugar group and one of four types of nitrogen bases. To form a strand of DNA, nucleotides are linked into chains, with the phosphate and sugar groups alternating.
Sections of our DNA that control what traits we have are called --------
I need help asap
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asked by La_ Melanie_ :0
today at 12:43pm
2 answers
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