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

Types specimens of echpnodermata, Types specimens of echpnodermata Befor...

Types specimens of echpnodermata Before we begin the study of the selected specimens of the following echinoderms - Feather star, Brittle star, Sea urchin, Sea cucumber and Star

What is the action mechanism of the antibiotic penicillin, What is the acti...

What is the action mechanism of the antibiotic penicillin? Penicillin, discovered by the Scottish doctor Alexander Fleming in 1928, is a drug that inhibits enzymes essential fo

Mitosis, what is mitotic apparatus

what is mitotic apparatus

Open heart surgery , Open Heart Surgery These surgeries are done unde...

Open Heart Surgery These surgeries are done under alternative arrangements to continue oxygenated systemic blood supply, while the heart is operated on (Cardiopulmonary bypas

Binomial nomenclature, Binomial Nomenclature The modern system of clas...

Binomial Nomenclature The modern system of classification (Binomial nomenclature) accepted by biologists today was proposed in 1758 by the Swedish botanist Linnaeus (1707-1778

Human biology, can i get a complete note to conceptualise human biology for...

can i get a complete note to conceptualise human biology for medical entrance preparation?

Integumentary, What modern technology used for the integumentary system?

What modern technology used for the integumentary system?

Determine the floor of nose and nasal spine, Floor of nose and Nasal spine ...

Floor of nose and Nasal spine Although variable, the nasal floor is typically situated 5-9mm below the level of inferior turbinates. The inferior piriform rim is used as a guid

Totipotency and pluripotency, Totipotency and Pluripotency In the sta...

Totipotency and Pluripotency In the starting we said that the fertilized egg cell (zygote) has the capacity or potentiality to give rise to all kinds of cell types, like a bl

What is lactation, What is Lactation? High levels of estrogens and prog...

What is Lactation? High levels of estrogens and progesterone during pregnancy stimulate the breasts to develop prior to lactation, or milk production. At the same time, levels

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