In one strand of a double stranded DNA the rate of occurrence of A is 3 times C in consecutive 10 bases. So how many G will be there in 100 base pairs of a DNA duplex?.

In one strand of a double stranded DNA the rate of occurrence of A is 3 times C in consecutive 10 bases. So how many G will be there in 100 base pairs of a DNA duplex?. Correct Answer Consider G=T in one strand

Let’s consider C = 1 Therefore, A = 3C = (3*1) = 3 Now, A+C = (3+1) = 4 Again G = T And A+C+G+T = 10 Now replacing T with G and putting the value of A+C We get, 4 + 2G = 10 2G = 6 G = 3, T = 3, A = 3, C = 1 Thus in 100 bases in one strand there are (3*10 = 30) G residues Now for the complementary strand G = C residues Therefore, C = G = 1 residue in every 10 bases That is, G = 1*10 = 10 in 100 bases Therefore total number of G residues = 30 + 10 = 40 in 100 base pairs of a DNA duplex.