Question

УМОЛЯЮ! СУПЕР СРОЧНО! ЗАВТРА СДАВАТЬ! Фрагмент кодирующей цепи ДНК содержит 750 нуклеотидов, на долю интронов в ней приходится 76%. Определите количество аминокислот в белковой молекуле, закодированной в данной цепи ДНК. * (ОТВЕТ ПОЛНЫЙ!)

Answer 1

Ответ:

интроны- некодирующей участки, а значит нам нужны, 24%от 750 это будет 180 нуклеотидов. Одну аминокислоту кодирует один триплет, состоящий из трёх нуклеотидов.180:3=60 (аминокислот)

Объяснение:

60 аминокислот

Answer 2

Determining the Number of Amino Acids in a Protein Encoded by a DNA Sequence

To determine the number of amino acids in a protein encoded by a DNA sequence, we need to consider a few factors. First, we need to know the length of the DNA sequence, as well as the proportion of introns within it. Additionally, we need to understand the genetic code, which specifies how nucleotide triplets (codons) are translated into amino acids.

In this case, we are given that the DNA sequence contains 750 nucleotides, and 76% of it consists of introns. To calculate the number of amino acids in the protein encoded by this DNA sequence, we need to consider the following steps:

1. Calculate the number of exonic nucleotides: - Exonic nucleotides are the non-intron regions of the DNA sequence. - To calculate the number of exonic nucleotides, we subtract the proportion of introns (76%) from 100%: 100% - 76% = 24%. - Multiply the percentage of exonic nucleotides by the total number of nucleotides in the DNA sequence: 24% * 750 = 180 nucleotides.

2. Determine the number of codons: - Each codon consists of three nucleotides. - Divide the number of exonic nucleotides by three to obtain the number of codons: 180 / 3 = 60 codons.

3. Calculate the number of amino acids: - Each codon corresponds to one amino acid, according to the genetic code. - Therefore, the number of amino acids in the protein encoded by the DNA sequence is equal to the number of codons: 60 amino acids.

Please note that this calculation assumes that there are no frameshift mutations or other genetic variations that could affect the reading frame or the translation process. Additionally, it is important to consider that the actual number of amino acids in a protein can be influenced by post-translational modifications and alternative splicing.