In the DNA molecule, 880 guanine nucleotides are found, which make up 22% of the total number of nucleotides

In the DNA molecule, 880 guanine nucleotides are found, which make up 22% of the total number of nucleotides of this DNA. Determine the length of the DNA and how many other nucleotides are contained.

By the principle of complementarity: the amount of Guanine is equal to the amount of Cytosine.

G = C = 880 = 22%.

G + C = 1760 = 44%.

We make the proportion:

1760 – 44%

X – 100%.

X = 4000 nucleotides.

DNA chain length: 4000 * 0.34 nm = 1360 nm.

A + T = 100% – 44% = 56%.

Let’s make the proportion:

100% – 4000

56% – H.

X = 2240.

A = T = 1120 = 28%.