·molar percentage on thymine in a double stranded DNA is 20. whst r teh percentages of the 4 bases G, A,C,T?

Question

molar percentage on thymine in a double stranded DNA is 20. whst r teh percentages of the four bases G, A,C,T

Answer 1

Since each T has to pair with an A, you'd have the same molar percentage T as A. That wouldn't exactly equal their weight percentages since T is a good bit smaller than A, has only one heterocyclic ring to A's two fused rings. So by molar percent, you'd have 20% A. The rest of the bases are made up of G and C, and amount to 60%. Half will be C and the other half G, since those two equal each other and pair together, so each of them has a 30% mole percent. Again, since G is larger than C, that won't reflect their weight percent, which will be larger for G than for C.

Answer 2

well, T is almost always connected to A so you would have same number of adenine as thymine. Likewise, G is almost always connected to C so you would have same number of guanine as cytosine. Just determine the molar percentage of A from this fact, then determine number of G and C combined. You can obtain molar percentage of G and C by figuring out their relative weights.

Answer 3

G-30
A-30
C-20
T-20