Some help please...
In a human DNA molecule 30% is adenine. Find the % of guanine, cytosine and thymine...

Question

Some help please...
In a  human DNA molecule 30% is adenine. Find the % of guanine, cytosine and thymine...

anonymous · Answer

Adenine bonds to Thymine, so the percentages must be the same. Whatever isn't an A-T bond is a C-G bond, so the percentages of Cytosine and Thymine would be 1 - (%of A-T bond).

angela210793 · Answer

so A and T have 60% and C+G has 40%?

anonymous · Answer

No, you wouldn't add the percentages, A and T both occur at a 30% chance, which is what you were given.

angela210793 · Answer

Hmm....so G is 60%?

angela210793 · Answer

70*

anonymous · Answer

it would be 1 - 0.3 = ?

angela210793 · Answer

and so will be C right?
Thnx ^_^ :)

anonymous · Answer

Yes, 70%.

anonymous · Answer

http://wiki.answers.com/Q/If_25_of_DNA_is_Adenine_what_percent_is_Cytosine http://en.wikipedia.org/wiki/Chargaff%27s_rule