Question

Фрагмент молекулы ДНК состоит из 5760 нуклеотидов, из них 1125 тимидиловых нуклеотидов. Определите количество адениловых, гуаниловых и цитидиловых нуклеотидов в данном фрагменте молекулы ДНК.

Answer 1

Т=А г= ц по правилам чаргаффа следовательно адениловых равно 1125 . сумма гуаниловых и цитидиловых равна 5760-2250= 3510 дальше делом пополам и получаем ответ то есть по 1755 г и ц, а остальных по 1125 Т и А

Answer 2

Determining the Number of Adenine, Guanine, and Cytosine Nucleotides in the DNA Fragment

The given DNA fragment consists of 5760 nucleotides, with 1125 of them being thymidine nucleotides. To determine the number of adenine, guanine, and cytosine nucleotides in this fragment, we need to consider the base pairing rules in DNA.

In DNA, adenine (A) always pairs with thymine (T), and guanine (G) always pairs with cytosine (C). Therefore, the number of adenine nucleotides will be equal to the number of thymidine nucleotides, and the number of guanine nucleotides will be equal to the number of cytosine nucleotides.

Given that there are 1125 thymidine nucleotides in the fragment, we can conclude that there are also 1125 adenine nucleotides in the fragment. Similarly, the number of guanine nucleotides will be equal to the number of cytosine nucleotides.

Therefore, in the given DNA fragment: - The number of adenine nucleotides is 1125. - The number of guanine nucleotides is 1125. - The number of cytosine nucleotides is unknown.

Please note that the exact number of cytosine nucleotides cannot be determined based on the given information.