Describe dna replication in details, Biology

Assignment Help:

Describe DNA replication in details?

Replication :  DNA replicates itself by first breaking the hydrogen bonds between the nitrogen base pairs, and "unzips" itself into two strands. A replication fork, a Y-shaped structure, moves down the strands as DNA unzips.

875_replication fork.png

Complementary nucleotides, which are floating free in the nucleus, form hydrogen bonds with each separated DNA strand at their matching nucleotide sites according to the base-pairing rule. In this way,

DNA replication is a semi-conservative process whereby each half of the original DNA strand builds a new complementary strand on itself. DNA polymerases catalyze the formation of sugar to phosphate bonds of the nucleotide monomers to complete the building of a new strand on the original strands.

Replication takes place at a very fast rate. In the bacterium E. coli, the complex makes DNA at over 1000 base pairs per second, and makes mistakes in the order of perhaps one base in a billion to one per trillion. In bacteria, there is just one point where replication begins, but in eukaryotes there are many specific origins for replication. Replication can proceed in both directions from an origin.


Related Discussions:- Describe dna replication in details

Explain the composition of blood agar, Explain the Composition of Blood Aga...

Explain the Composition of Blood Agar? Infusion from beef heart - 500 gm Tryptose - 10.0 gm Sodium Chloride -  5.0 gm Agar - 15 gm Distilled water - 1000  ml pH

Life processes, mode of nutrition : out side the body

mode of nutrition : out side the body

Cellular machinery for the replication of nucleic acids, Which of the follo...

Which of the following statements is true? Answer Viruses are distict from cells by the absence of a lipid membrane around them. Viruses are parasites that require the cell's metab

What are the specialized structures help adhesion cell, What are the specia...

What are the specialized structures that help the adhesion between cells? The structures responsible for the union of the epithelial cells are known as cell junctions. The main

Peculiarities of mitosis - cleavage, Peculiarities of Mitosis - Cleavage ...

Peculiarities of Mitosis - Cleavage From the following you will learn that the mitosis in the phase of cleavage has some striking peculiarities: a) Synchronization of cell

Agro industrial-mineral supplements, Mineral supplements There are two...

Mineral supplements There are two major classes of mineral sources: inorganic and organic. Organic complexes, however, have been shown to be more effectively absorbed by the a

Explain the cultural practices of single crop, Explain the Cultural Practic...

Explain the Cultural Practices of single crop Continuous cultivation of a single crop over years on the same site causes accumulation of a particular group of microbes, which d

Pancreatic juice resume the digestion of carbohydrates, Q. How does the pan...

Q. How does the pancreatic juice resume the digestion of carbohydrates? What is the involved enzyme? Carbohydrate digestion begins with the action of the salivary amylase (ptya

What are lateral meristems, What are lateral meristems? Where can they be f...

What are lateral meristems? Where can they be found and which type of plant growth do they promote? Lateral, or secondary, meristems, are the cambium and the phellogen (also ca

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