Answer:
D. Tap water out of a steel bottle
Explanation:
The answer is A because if you want a reliable source of scientific information you should go to an actual scientist at a scientific conference.
All photosynthetic organisms <span />
Chargaff found out that t<span>he ratios of thymine and adenine were equal and the ratios of guanine and cytosine were equal. He then created the Chargaff's rule states that double stranded DNA has a 1:1 ratio between pyrimidine and purine bases. With this, </span><span>amount of guanine bases is equal to cytosine bases while the amount of adenine bases is equal to thymine bases.</span>
W. Adenine / Thymine. B. Guanine / Thymine / Cytosine.
