DNA is made up of four nitrogenous bases namely; adenine, guanine, cytosine and thymine. These bases compliment each other to form base pairs
Base pairs occur when nitrogenous bases make hydrogen bonds with each other. Each base has a specific partner: guanine with cytosine, adenine with thymine (in DNA).
When sequencing with RNA adenine is then paired with uracil as RNA does not contain thymine
I am pretty sure that the side of a mountain range that faces the wind often receives more<span> precipitation </span><span>than the downwind side of the same range.</span>