Answer: Base pairs are formed when adenine forms a hydrogen bond with thymine, or cytosine forms a hydrogen bond with guanine. The second part of a nucleotide is the phosphate, which differentiates the nucleotide molecule from a nucleoside molecule.
Explanation:
If i'm correct. it should be Macroevolution
A. to find out if a hypothesis is correct.
The two gasses that make up 99% of the earth's atmosphere are nitrogen and oxygen.
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