If an organisim DNA contains 30% adenine what percentage of guanine is in their DNA?

Question

10%
40%
15%
50%
20%
70%
25%
75%
30%
90%

Answer 1

Well, you know that thymine always meets up with adenine in DNA. So you'd have 30% thymine (it's a one-for-one relationship).

So that leaves 40% of DNA unaccounted for.

And that 40% must be both cytosine and guanine. And they always match up. So that means that of that leftover 40%, half is cytosine and half is guanine.

I'm sure you can take it from here.

Answer 2

BELIEVE ME 20% is the right answer.
Adenine always pairs with thymine ,If an organisim DNA contains 30% adenine the thymine percentage will be 30%, so it has made to 60%.
the rest is 40 percent which must be guanine and cytocine both.
If only GUANINE IT IS 20% as Guanine always pairs with cytocine in DNA

Answer 3

20

Answer 4

The question arrise a different scenario to look at genetic mapping. The premise of the nucleotide sequences in the genome consists of a 1:1 ratio of purines (the like with pyridines). Therefore, with the propositons of the question, 30% adenine would require the same percent of thymine, leaving 40% for the other class of genetic nucleotides. The answer is 20%.

Answer 5

20---

%A=%T, so A+T=60%

That leaves 40% left over. The remaining 40% must be G and C. Divide 40 in two (half for G and haf for C) and you get 20%.

Answer 6

20%