Coding region, non coding region, promoter, abort, intron, exon

All on the DNA sequence, different segments.

1. The difference between exons and introns:

1. Whether it is a coding sequence: Introns are non-coding sequences of broken genes that can be transcribed. Exons are coding sequences in broken genes.

2. The results of the evolutionary process are different: the introns are sheared off during the mRNA processing, so there is no intron coding sequence on the mature mRNA. Exons are preserved after splicing and can be expressed as proteins during protein biosynthesis.

3. Different mutagenesis: introns are meaningless to the structure of translation products and are not subject to the pressure of natural selection, so they have more mutations than exon accumulation. Exons are the last gene sequences to appear in mature RNA, also known as expression sequences, and all the exons together form the genetic information, which will be reflected in the protein, which is relatively stable with the intron.

2. The difference between the coding area and the non-coding area:

1. Whether the messenger RNA can be transcribed: The coding region refers to the part that can transcribe the messenger RNA, which can synthesize the corresponding protein, while the non-coding region is the DNA structure that cannot transcribe the messenger RNA.

2. Different compositions: eukaryotes where the coding region is composed of exons and introns, but the introns are non-coding sequences, so in the gene structure of eukaryotic cells, the non-coding regions and introns are non-coding sequences. Exons belong to coding regions.

Whether it is a eukaryotic cell or a prokaryotic cell, its genes have coding regions (can transcribe mRNA, and then encode proteins) and non-coding regions (can not transcribe mRNA, cannot code proteins), and the coding regions of eukaryotic cell genes can be divided into exons (which can code proteins) and introns (which cannot code proteins).

While the codon is located on the mRNA, the start codon has AUG (determines methionine) and GUG (determines valine), while the stop codon has UAA, UAG, UGA, and does not determine amino acids.

The genes of eukaryotes are made up of coding and non-coding regions, with non-coding regions (non-coding sequences) on either side and coding regions (coding sequences) in the middle. The coding region in the middle is also composed of coding sequences and non-coding sequences arranged alternately, and the coding sequences are called exons, and the non-coding sequences are called introns.

The genes of prokaryotes also have coding regions and non-coding regions, but the coding regions are continuous coding regions. (Note that in prokaryotic genes, there is no concept of exons and introns, i.e. you can't say that the coding regions of prokaryotes are all exons).

This kind of gene transcription is to first synthesize mRNA with one of the strands of the coding region as a template, which is the precursor mRNA, and then some enzymes cut off the corresponding sequences of those introns and link the sequences of the mRNA corresponding to the exons together, which is the mature mRNA, which is the direct template for translating proteins. Ribosomes bind to it and slide along it. The synthesis of peptide chains begins when AUG (the start codon of eukaryotes) or GUG (the start codon of prokaryotes) is encountered, and the synthesis of peptide chains is terminated when UAA, UAG, and UGA (stop codons) are encountered.

Bottom line: Coding regions (exons, introns) and non-coding regions are the structure of genes. The start and stop codons are groups of three bases of mRNA.

The non-coding region is the sum of all the genetic material of an organism. A non-coding region contains a complete set of introns.

In the field of molecular biology and genetics, the non-coding region refers to the sum of all the genetic material of an organism. This genetic material includes DNA or RNA (viral RNA). Genomic DNA includes coding DNA and non-coding DNA, mitochondrial DNA, and chloroplast DNA.

The term genome was coined in 1920 by Hans Winkler, a professor of botany at the University of Hamburg in Germany.

In a typical diploid cell or individual, the lowest set of chromosomes that can maintain the normal function of gametes or gametophytes is called a chromosome set or genome, and a genome contains a complete set of genes. All the corresponding cytoplasmic genes constitute a cytoplasmic genome, which includes mitochondrial genome and chloroplast genome.

It doesn't matter, it doesn't express or regulate.

To put it simply, bai

Exons can be translated into proteins.

du is a codon.

Introns also. zhi is a codon but.

DAOs are not usually translated into version proteins.

The coding region is the part of the cell's weighted DNA, which is capable of transcribing the part of the messenger RNA and is capable of synthesizing the corresponding protein.

The non-coding region is a DNA structure that is incapable of transcribing messenger RNA. However, it is able to regulate the expression of genetic information.

When transcription meets a terminator, an enhancer is a DNA sequence that increases the frequency of transcription of a gene linked to it. Enhancers are promoters that increase transcription. Effective enhancers can be located at the 5' end of the gene, at the 3' end of the gene, or in the intron of the gene.

The effect of enhancers is obvious, generally increasing the frequency of gene transcription by 10,200 times, and some can even be as high as 1,000 times.

Introns. It belongs to the coding area and is a non-coding sequence in the coding area.

The non-coding region refers to the regulatory region on both sides of the coding region, also called the flanking sequence, including the enhancer promoter we talked about in class.

Introns and exons.

The intron is the non-coding sequence, and the non-coding coding region refers to the regulatory region on both sides of the coding region, including promoters, enhancers and terminators.