What Is DNA Replication
DNA stands for Deoxyribonucleic Acid. DNA is responsible to store genetic information of organisms. The biological process of transferring genetic information from a parent to progeny organisms by a true replication of the parental DNA molecule is known as “DNA replication”. DNA replication in a cell commences at particular locations in the genome named origins. Generally information transferred will reside in one or more double-stranded DNA molecules. However, replication of a double stranded DNA is quietly complex process and is not entirely implicit.
The four nucleotide base pairs of DNA are Adenine (A), Guanine (G), Cytosine(C) and Thymine (T). DNA is the arrangement of a double helix. Appears like a twisted ladder with nucleotides in the centre. The sides of helix are prepared of deoxyribose i.e. sugar and the rungs are made of nucleic acids. Nucleotides are seized mutually with loose hydrogen bonds. At all time, nucleotides are in pairs.
It is true that every cell in living body has the same copy of DNA and everything started from a single DNA. DNA will copy by itself trillions of times in one’s DNA. The four major troupes in DNA replication are original DNA strand, helicase, free nucleotides and DNA polymerase. DNA contains two strands of building blocks of nucleotides arranged like a spiral set of steps. Each nucleotide includes its three parts: a phosphate groups, a sugar molecule and a one of nucleotide bases mentioned above. The sugar phosphate bonds form the double backbone of the molecule. But we find a generic key to DNA in the steps of the stairway. The nitrogen contains bases.
Helicase is a protein that is basically responsible to unzip DNA by breaking the loose hydrogen bonds. And free nucleotides are the unused nucleotides that float in the cytoplasm, used to build DNA. Nucleotides are just like loose bricks. DNA polymerase is protein that is responsible for constructing DNA strands and as well used for DNA repair. In the process of DNA replication, helicase unwinds the template DNA. DNA polymerase connects to each original DNA strand. DNA polymerase adds matching loose nucleotides. DNA polymerase releases two DNA strands are produced. However, to initiate synthesis a small section of either DNA or RNA which is worded as premier must be formed with the template DNA strand.
To conclude, any replication process to start firstly cell has to be divided. And this process of initiating at specific points in the DNA is known as origins. Origins are embattled by proteins which divide the two strands and commence DNA synthesis. And if there is no DNA process, there are no generations to emerge. Certainly, DNA replication is a real proof to the existence of GOD.