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

What might be the value of the everglade restoration plan, What might be th...

What might be the value of the Everglade restoration plan? Everglades will protect endangered species, such as the Florida panther, and restore the water flow needed by many or

State the important role of microorganisms, State the important role of mic...

State the important role of microorganisms The important role of microorganisms was recognised as early as 1838, when J.B. Boussingeutt a French agricultural chemist observed t

Explain imiquimod, Imiquimod (Aldara) This immunomodulator is FDA-appro...

Imiquimod (Aldara) This immunomodulator is FDA-approved for topical treatment of external and perianal genital warts, which are caused by papillomavirus. Gradual clearance of w

Define requirements of vitamin a for infants, Define requirements of Vitami...

Define requirements of Vitamin A for infants? As for vitamin A deficiency, requirement of vitamin A is the most easy to meet as it is abundantly present in green and yellow veg

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 are some antibiotics used against fungi, Q. What are some antibiotics ...

Q. What are some antibiotics used against fungi? The systemic or topical azoles (like fluconazole, itraconazole and others), amphotericin B, the echinocandins (caspofungin, mic

Define natural disasters - public nutrition, Define Natural Disasters - Pub...

Define Natural Disasters - Public Nutrition? Disaster prone settings also shape the intensity and prevalence of food insecurity, these consist of poor who are exposed to recurr

What is the equilibrium state of the system, For each of the cases that fol...

For each of the cases that follow, list as many properties of the equilibrium state as you can, specially the constrains placed on the equilibrium state of the system by its surrou

Briefly explain endocrine system, Q What is the constitution of the endocri...

Q What is the constitution of the endocrine system? The endocrine system is constituted by the hormones and the endocrine glands they secrete. Q. What is the histological n

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