There are 300 nucleotides with cytosine in a DNA molecule, which is 20% of the total number of nucleotides with adeline?

1) According to the principle of complementarity C = G, A = T
2) If C = 20%, then G = 20% => 100% – (20% + 20%) = 60% with Adenine and Timin
3) To find out how much adenine we need to divide 60% by 2 (60%: 2) and we get 30%.
Answer: 30



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