How do they affect the processing of genetic information, Biology

Assignment Help:

Q. What are introns, and how do they affect the processing of genetic information?

Introns, a feature of eukaryotic DNA, are intervening stretches of DNA lying between the exons. Exons represent message material which actually gets translated into protein, whereas the introns should eventually be excised fromthe final mRNA product. Initially, both exons and introns are coded into an mRNA transcript. Existence of introns and exons was demonstrated when it was discovered that only about one-third of the primary transcript of DNA was used to make protein. In a highly complicated process, intron regions are removed from rough primary transcript on DNA template to produce a secondary, mature mRNA that codes onlyfor the exons. It is now clear that terminator and initiator signals should mark thebeginning and end of each intron within a gene.

Despite the fact that intron isn't directly involved in shaping the final protein product, it appears to be essential to synthesis of a functional mRNA. Process of excising the intron regions involves the participation of RNA as an enzyme. This catalytic RNA is part of a protein-RNA particle termed as small nuclear ribonucleoprotein particle.


Related Discussions:- How do they affect the processing of genetic information

What is chemical disinfection, Q. What is Chemical disinfection? Chemic...

Q. What is Chemical disinfection? Chemicals are added to waste to kill or inactivate the pathogens it contains, this treatment usually results in disinfection rather than steri

Haemolysis-complications of prosthetic valves, Haemolysis :  Mechanical va...

Haemolysis :  Mechanical valves, bioprosthetic valves as well as valves repaired with annuloplasty rings may cause haemolysis and related anaemia. This is more common when there i

Middle lamella, MIDDLE LAMELLA It is thin, amorphous, intercellular ...

MIDDLE LAMELLA It is thin, amorphous, intercellular matrix between 2 adjacent plant cell. The cells of plant tissue generally cemented together by an intercellular matrix

Explain arteries in comparison to veins, Which of the below statements does...

Which of the below statements does NOT apply to arteries when comparing them to veins: a) Have thick walls b) Carry blood away from heart c) Highly elastic walls d) Ha

Food-borne zoonoses, Food-borne zoonoses Food-borne illnesses are seri...

Food-borne zoonoses Food-borne illnesses are serious public health problem. They are associated with the ingestion of contaminated foods by microorganisms and their toxins, ma

What is salmonella typhosn, What is salmonella typhosn Typhoid is  an e...

What is salmonella typhosn Typhoid is  an enteric fever, which relates  to acute infection of  short duration. It is   caused by bacteria called Salmonella typhosn about which

How does digestion in beings of the phylum annelida work, Q. How does diges...

Q. How does digestion in beings of the phylum Annelida work and which type of digestive system do they have? Digestion in beings of the phylum Annelida is extracellular. These

What dna and rna are polymers composed are called, DNA and RNA are polymers...

DNA and RNA are polymers composed of repeated units called?

Common respiratory disorders, COMMON RESPIRATORY DISORDERS: Respiratio...

COMMON RESPIRATORY DISORDERS: Respiration is one of the most vital functions of the body. The purpose of respiration is to provide oxygen ta  the body  cells and to remove exc

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd