Question

Нуклеотиды ДНК могут отличаться друг от друга только...Пожалуйста помогите! не знаю ответ!

Answer 1

Всего нуклеотидов у ДНК 4 вида, каждый состоит из 3-х частей
1. азотистое основание  (аденин, тимин, гуанин, цитозин)
2 углевод (рибоза)
3. остаток фосфорной кислоты.

Второй и третий пункт у всех одинаков, а азотистые основания разные,  по названию, каждый нуклеотид так и называется

Answer 2

Understanding Nucleotide Differences in DNA

Nucleotides in DNA can differ from each other in several ways. The primary ways in which nucleotides in DNA can differ from each other are:

1. Sequence: The order of nucleotides in a DNA molecule can vary, leading to different sequences of nucleotides. This sequence variation is the basis for genetic diversity and the uniqueness of individuals.

2. Chemical Modifications: Nucleotides can undergo chemical modifications, such as methylation, which can alter their function and gene expression regulation.

3. Structural Variations: Structural variations in nucleotides, such as deletions, insertions, or substitutions, can occur, leading to differences in the DNA molecule's structure and function.

4. Epigenetic Changes: Nucleotides can also differ due to epigenetic changes, such as histone modifications and chromatin remodeling, which can affect gene expression without altering the DNA sequence itself.

These differences contribute to the diversity and complexity of genetic information encoded in DNA.