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 transmission electron microscope, Explain the Transmission Elec...

Explain the Transmission Electron Microscope Here, thin and dehydrated specimen is used. Electrons pass through the specimen and form image on to photographic film. These are u

Which are the brain regions associated with memory, Which are the brain reg...

Which are the brain regions associated with memory? According to researchers some of the main regions of the nervous system associated with the memory phenomenon are the hippoc

Enhancing the bio-availability of minerals, Mineral supplements and Mineral...

Mineral supplements and Mineral supplements and enhancing the bio-availability of minerals The proper balance of protein, energy, vitamins, and minerals is needed in the ratio

Cellular transport, Cellular Transport Cellular transports demote to th...

Cellular Transport Cellular transports demote to the movement of compounds across the outer wall or membrane of the cell. This transport is critical in two respects. Firstly, t

What is the activation center of an enzyme, What is the activation center o...

What is the activation center of an enzyme? Is it the key or the lock of the lock and key model? The activation center is a region of the enzyme formed by its spatial conformat

State the types of brain trauma, State the types of brain trauma? There...

State the types of brain trauma? There are two main types of brain trauma a) open head injury and b) closed head injury

Cell cycle, what is the process of cell cycle?

what is the process of cell cycle?

Define the effect of breastfeeding on mother, Normal 0 false ...

Normal 0 false false false EN-IN X-NONE X-NONE

Role of wter, What is the role of water in metabolism and photosynthesis I

What is the role of water in metabolism and photosynthesis I

Hypocalcaemia, H y po c a l c a e m i a It is also known as ...

H y po c a l c a e m i a It is also known as milk fever or parturient paresis. The disease occurs due to imbalance in input and output of calcium and is characterize

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