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

Discuss chemical examination of semen, Question 1 Discuss briefly the c...

Question 1 Discuss briefly the collection and examination of pericardial fluid Question 2 Discuss the following- A) Collection of CSF B) Physical examination o

Advantages and disadvantages of solar energy, Advantage of solar energy: ...

Advantage of solar energy: 1.         It is renewable: it produce comes from sun, so it is plentiful and will always be there   as long we need it . 2.         Solar

What is aneuploidy, What is aneuploidy? What are the conditions caused by t...

What is aneuploidy? What are the conditions caused by the aneuploidies? The Aneuploidy is an abnormal number of chromosomes in the cells of an individual. The major aneuploi

Pvcs during recovery, As the heart rapidly slows during recovery from exerc...

As the heart rapidly slows during recovery from exercise, PVCs commonly occur and usually have no clinical significance. This may be a time when metabolic adjustments in the heart

What are the genotypes of all individuals, 1. In cattle, the polled conditi...

1. In cattle, the polled condition (H) is dominant to the horned condition (h). A cross between an individual with red coat (R) and white coat (W) results in roan (RW). A polled, r

Metazoan branches, Metazoan Branches The Kingdom Animalia comprises al...

Metazoan Branches The Kingdom Animalia comprises all the multicellular animals (metazoans). These are divided into three branches: Mesozoa Parazoa Eumetazoa

Reproductive isolation, REPRODUCTIV E ISOLATION - According to the bio...

REPRODUCTIV E ISOLATION - According to the biological species concept, members of one species are reproductively isolated from members of all other species. Accordingly, re

Explain prophylaxis of lyme disease, Explain Prophylaxis of lyme disease ...

Explain Prophylaxis of lyme disease No vaccine is currently available to prevent Lyme disease in humans. Avoidance of ticks and use of tick repellents such as DEET or picaridin

How are the male gametophytes, How are the male gametophytes and the male g...

How are the male gametophytes and the male gametes formed in angiosperms? In the anthers of every stamen there are pollen sacs. Within the pollen sacs there are microspore moth

What are the identical proteins, Q. Are proteins with the same number of ea...

Q. Are proteins with the same number of each dissimilar amino acid that forms them necessarily identical proteins? Even if many proteins have the same number of each different

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