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a. Functional

i. Intronsmay control gene activity

ii. Alternate splicing can give >1 protein from the same gene

b. Evolutionary

i. Exons code for functional domains of proteins

ii. Widely spaced functional components allows recombination č new

proteins

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What is cut out of RNA molecules?

Introns are cut out of RNA molecules. Extrons are "spliced" together afterwards. Think of a long strand that is white with blue on the ends. The white of the strand is the intron, while the blue color are the extrons. The white color or the "intron" is cut out, and then the two blue strands merge together known as the extrons splicing together.


Which type of cell does not possess introns and extrons and produces polycystronic mRNA?

Prokaryotic cells do not possess introns and exons, and they produce polycistronic mRNA. This mRNA contains multiple coding sequences for different proteins in a single transcript, allowing for the production of several proteins from one gene.


What are introns and extrons and how are they different?

Introns are non-coding sequences within a gene that are transcribed but are later removed during RNA processing. Exons are the coding regions of a gene that are spliced together after introns are removed to form the mature mRNA transcript. This process is known as RNA splicing and is essential for producing functional proteins from genes.


Does RNA have introns?

Yes, RNA does not have introns.


Do prokaryotic genes have introns?

No, prokaryotic genes do not have introns.


Are there introns present in prokaryotes?

No, prokaryotes do not have introns in their genetic material.


Do prokaryotes have introns in their genetic material?

No, prokaryotes do not have introns in their genetic material.


Does bacteria have introns in their genetic material?

No, bacteria do not have introns in their genetic material.


Which of these statements does not describe introns?

Non-expressed


When was Introns - album - created?

Introns - album - was created on 2006-03-13.


Which part of the DNA molecule contains the genetic information used to make proteins?

The part of the DNA molecule that carries the genetic information is called the gene. It is the basic unit of heredity. The nucleotide base sequence encodes information. The bases of A,T and C,G code for the order of an Amino Acid which are the proteins. These four bases form millions of combinations that code for all the genetic material in a cell. These structures form the rungs of the ladder. DNA contains two different types of genes, known as introns and extrons. Extrons code for protein synthesis, and introns, as far as we can tell, play a role in determining when specific extrons will be expressed (which is to say, when they will actually be used for protein synthesis) and when they will remain dormant. Almost, the 4 types of nucleotides are "read" in groups of 3 to make 1 codon. Other than a start and stop codon, the rest are translated into amino acids. Those acids become proteins which are then made into genes, or cells of some kind.


Does mitochondrial DNA contain introns?

Yes, mitochondrial DNA does not contain introns. Mitochondrial DNA is a circular molecule that lacks introns, which are non-coding regions found in nuclear DNA.