Determine the percentage of all nucleotides in a DNA molecule if the adenyl nucleotides in this DNA

univerkov | February 17, 2021 | education

Determine the percentage of all nucleotides in a DNA molecule if the adenyl nucleotides in this DNA molecule are 31% of its molecular weight.

The solution to this problem is reduced to knowledge of the principle of complementarity of the DNA molecule. So, the amount of adenine is equal to the amount of thymine. The amount of guanine is equal to the amount of cytosine.
Given: 31% is the amount of adenyl nucleotides. Based on the data, it is possible to determine the amount of thymine nucleotides and will be equal to 31%, since A = T. The total number of nucleotides in a DNA molecule is 100%. Therefore, the amount of guanine and cytosine is 100% – (31% + 31%) = 38%. Since G = C, it means guanine is 19%, cytosine is 19%.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.