The DNA molecule contains 880 guanyl nucleotides, which make up 22% of the total number

| May 30, 2021 | education

The DNA molecule contains 880 guanyl nucleotides, which make up 22% of the total number of nucleotides of this number. How many other nucleotides are in this DNA.

According to the principle of complementarity, one guanyl nucleotide (G) corresponds to one cytosine (C) nucleotide. Consequently, the amount of cytosine nitrogenous bases in the DNA molecule is equal to the amount of guanyl bases.

We get:

G + C = 22% + 22% = 44% = 880 + 880 = 1760 (pcs.)

We make the proportion:

1760 – 44%

x – 100%

x = 100 * 1760: 44 = 4000 (pcs.)

Thus, the total number of nucleotides in a given DNA molecule will be 4000 pieces.

The number of adenyl and thymine nucleotides will be: 4000 – 1760 = 2240 (pcs.)

2240: 2 = 1120 (pcs.)

Thus, if there are 880 guanyl nucleotides in a DNA molecule, then the amount of the remaining nucleotides will be as follows: 880 cytosine, 1120 adenyl, 1120 thymine.



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