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Are mRNA molecules made from the same gene always edited the same way?
Wiki User
∙ 13y ago
No. A gene is transcribed to pre-mRNA which can then be 'edited' or spliced in different ways to generate different mRNAs to encode different protein isforms. This is known as alternative splicing.
Wiki User
∙ 13y ago
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How many RNA molecules will result from one round of transcription?
Generally there is one mRNA transcript made from each gene. There are exceptions to this.
What mechanisms of gene regulation operates after mRNA transcription but before translation of mRNA into protein?
There are two mechanisms as related to above. Firstly, the removal of All Introns occurs - via the Spliceosome -, and then a "poly AAAAAAA" tail is attached to the [edited] mRna transcript just before its export to the cytoplasmic Ribosomes.
What is the stop codon in most molecules of mRNA?
stop codon on mRNA
How does the process of RNA interference work?
Certain small RNA molecules fold into loops. The Dicer enzyme cuts them into microRNA (miRNA). The strands then separate. An miRNA piece attaches to a cluster of proteins to form a silencing complex. The silencing complex binds to and destroys an mRNA molecule that contains a base sequence complementary to the miRNA. In this way, it blocks gene expression.
What is the name of the process of making mRNA copt of a gene?
Transcription.
In what part of the cell will the pre-mRNA be edited?
Transcription. This process is when the mRNA is made, edited, then sent out to be translated.
How many RNA molecules will result from one round of transcription?
Generally there is one mRNA transcript made from each gene. There are exceptions to this.
What mechanisms of gene regulation operates after mRNA transcription but before translation of mRNA into protein?
There are two mechanisms as related to above. Firstly, the removal of All Introns occurs - via the Spliceosome -, and then a "poly AAAAAAA" tail is attached to the [edited] mRna transcript just before its export to the cytoplasmic Ribosomes.
Can Shrna development be used in medical reasearch?
Shrna development may of course be used in medical research. The molecules inhibit gene expression in the DNA. They cause the destruction of the mRNA molecules.
What molecule contains the information on how to make proteins?
mRNA molecules carries information from a gene to the ribosome.
Small pieces of DNA that is edited out of the mRNA message before it is expreeed?
Small pieces of DNA that is edited out of the mRNA message before it is generated is a intron. It is removed by the RNA splicing.
What is the stop codon in most molecules of mRNA?
stop codon on mRNA
What is produced when gene transcription occurs?
Genes are transcribed onto an mRNA molecule.
How does the process of RNA interference work?
Certain small RNA molecules fold into loops. The Dicer enzyme cuts them into microRNA (miRNA). The strands then separate. An miRNA piece attaches to a cluster of proteins to form a silencing complex. The silencing complex binds to and destroys an mRNA molecule that contains a base sequence complementary to the miRNA. In this way, it blocks gene expression.
Which nucleic acid can be a gene?
A gene is a segment only on DNA. A gene transcribed to mRNA is usually no longer referred to as a gene.
Which of these is a type of post-transcriptional regulation of gene expression?
Post-transcriptional regulation of gene expression can refer to the life of mRNA. You see, mRNA is transcribed into a protein in the cytoplasm, and if the mRNA only stays in the cytoplasm for a short period of time, then only some of the enzymes coded for on the strand can be created. So if the mRNA is programmed to die early, then only some of the proteins will be produced and only some genes will be expressed. It can also refer to the excision of introns and sometimes exons. pre-mRNA is usually edited by proteins to take out the introns, which are basically useless gene sequences (sometimes called junk DNA). Then the mRNA goes on to express the genes it codes for. But if the proteins take out introns and ALSO some exons, then some genes will be removed and not be expressed. This is another type of post-transcriptional gene regulation. Hope this helped!
What is mRNA?
A RNA copy of a DNA gene <--- Gradpoint/NovaNet Messenger RNA (mRNA) is a form of RNA that codes for amino acids. During transcription a sequence of mRNA is made from a corresponding sequence of DNA. In a eukaryote, the mRNA is then processed and sent outside the nucleus to be translated by a ribosome in the cytoplasm. As for a prokaryote (which has no nucleus), the mRNA is already in the cytoplasm and just needs to be translated by a ribosome also in the prokaryote's cytoplasm.
