Question

Фрагмент гена ДНК имеет следующую последовательность нуклеотидов ТГГАЦАТГТГГТТТЦАГАГТА. Определите последовательность нуклеотидов и-РНК и аминокислот в полипептидной цепи белка.

Answer 1

И-РНК: АЦЦУГУАЦАЦЦАААГУЦУЦАУ
Белок: ТРЕ-ЦИС-ТРЕ-ПРО-ЛИЗ-СЕР-ГИС

Answer 2

Determining the RNA sequence:

The given DNA sequence is "ТГГАЦАТГТГГТТТЦАГАГТА". To determine the corresponding RNA sequence, we need to replace the DNA nucleotides with their RNA counterparts.

The RNA nucleotide counterparts are as follows: - Adenine (A) in DNA is replaced by Uracil (U) in RNA. - Thymine (T) in DNA is replaced by Adenine (A) in RNA. - Guanine (G) in DNA remains as Guanine (G) in RNA. - Cytosine (C) in DNA remains as Cytosine (C) in RNA.

Therefore, the RNA sequence corresponding to the given DNA sequence is "УГГУАУГУГГУУУГАГАУ".

Determining the amino acid sequence:

To determine the amino acid sequence in the polypeptide chain of the protein, we need to use the RNA sequence obtained in the previous step and refer to the genetic code.

The genetic code is a set of rules that determines how the sequence of nucleotides in RNA is translated into the sequence of amino acids in a protein. Each three-letter sequence of RNA nucleotides, called a codon, corresponds to a specific amino acid.

Using the RNA sequence "УГГУАУГУГГУУУГАГАУ", we can determine the corresponding amino acid sequence by referring to the genetic code.

Here is the breakdown of the RNA sequence into codons and their corresponding amino acids:

- "УГГ" -> Phenylalanine (Phe) - "УАУ" -> Tyrosine (Tyr) - "УГУ" -> Cysteine (Cys) - "УУУ" -> Phenylalanine (Phe) - "ГАГ" -> Glutamic Acid (Glu) - "АУ" -> Isoleucine (Ile)

Therefore, the amino acid sequence in the polypeptide chain of the protein corresponding to the given DNA sequence is Phe-Tyr-Cys-Phe-Glu-Ile.

Please note that this response is based on the provided DNA sequence and the standard genetic code.