What is meant by gene expression, Biology

Assignment Help:

What is meant by Gene Expression?

The synthesis of protein under the influence of gene is called Gene Expression. All human cells are derived from a single cell, fertilized egg or zygote. Therefore, all cells contain the same genetic information. However, a cell from the gastrointestinal epithelium is different from a cell of the central nervous system or from the liver, both by structure and function. In a cell about 90% of DNA is permanently inactive. His tones and specific proteins help in this inactivation process and consequent differentiation.

The fundamental dogma of molecular biology is that DNA produces RNA (ribonncleic acid), which in turn produces proteins. Thus, the genetic information in the DNA specifying particular functions is converted into an RNA copy by the process of transcription, which is then translated into protein. The action of the protein then produces the phenotype. Current scientific evidence indicates that only 10% of the human DNA contains genes, i.e., those sequences that are transcribed and translated.

In simple terms, gene expression is the process by which a gene's DNA sequence is converted into the structure and functions of a cell. Gene expression is a multi- step process that begins with transcription of DNA into messenger RNA (mRNA).


Related Discussions:- What is meant by gene expression

Integumentary system - nails, NAILS - Cover terminal segment of fing...

NAILS - Cover terminal segment of fingers & toes. Highly vascular dermis under lying the nail is called nail bed . It gives pinkish colour to nail. The small part

Which terrestrial vertebrate group is extremely rare, Which terrestrial ver...

Which terrestrial vertebrate group is extremely rare in deserts? Amphibians are terrestrial vertebrates extremely rare in desert environments (although there are a some species

What is intra oral and extra oral, What is Intra oral and Extra Oral A...

What is Intra oral and Extra Oral A) Intra oral a) Frontal in occlusion b) Left and right occlusion (Using intra oral photography mirror) c) Occlusal view maxillary

Reaction - processes in succession, Reaction - Processes in Succession ...

Reaction - Processes in Succession This is the most important stage in succession. The mechanism of modification of environment, through the influence of living organisms on i

Diagnosis and treatment of infective endocarditis, Diagnosis Health hi...

Diagnosis Health history - any recent surgery/dental procedures, history of heart disease, recent infectious diseases, etc. Clinical Manifestation Laboratory

Describe the factors of biological evolution of humans, Although there are ...

Although there are differences in interpretation of the evidence, it is generally accepted that human biological evolution has not been a linear progression from one species to the

Compound Microscope, The highest possible magnification that can obtain whe...

The highest possible magnification that can obtain when using using a microscope?

How cultural practices are effective at limiting disease, Give two cultural...

Give two cultural practices (not chemical) you could use to control black spot of rose. Based on your current knowledge of the disease triangle, why do you think these cultural pra

Under which forms is the trypanosoma cruzi found, Q. Under which forms is t...

Q. Under which forms is the Trypanosoma cruzi found in its hosts? In the definitive hosts also as in triatomine bugs (intermediate hosts) the protozoan that causes Chagas' dise

Define carcinogenic - dietary factors, Define Carcinogenic - Dietary Factor...

Define Carcinogenic - Dietary Factors? Dietary constituents can also be carcinogenic. But to what extent diet is one of the contributing factors to cancer development is not kn

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