00:01
The deoxy ribonucic acid denoted as dna is always subjected to replication.
00:09
This dna replication is a normal process of cell cycle, in which the double standard dna denoted as dna is broken into single standard dna initially, denoted as ssdna.
00:27
After which from the single standard template regions the replication of the double standard dnas takes place that is from each single strand two double strands dna are produced which further when the cell is subjected to cell division gets independently sorted into the daughter cells denoted as dc.
01:04
So let's see how replication takes place.
01:08
Let's say if this is the double standard dna.
01:12
It usually runs from a 3 dash to 5 dash direction and its anti -parallel stand runs from a 5 -2 3 -dash direction.
01:25
Initially the enzyme helicase is used to unwind the double standard dna.
01:36
So when it is used, a replication fork is created.
01:44
That is it unvines it.
01:46
So after the dna is unwound, the ribonuclic acid primase denoted as rna primase is used.
02:03
This attaches, this is a small sequence of the mrna or the messenger rna which attaches to the 3 -dash side of the template dna.
02:19
After which the dna polymerase enzyme is introduced.
02:29
The dna polymerase enzyme based on the complementary base pairing technique adds nucleotides to the template dna from the rna primase.
02:45
So like this, this chant continues.
02:50
That is, if the template dna as adinine, thiamine, guanine, and cytosin as the nucleotides, the dna is, adds complementary base pairing to this.
03:03
That is, it has t, a, c and g.
03:08
Ardenine always base pairs only with thineine and quinine always base pairs only with cytosin.
03:16
However, this dna polymerase can add enzymes, that is, they can add nucleotides only from the 3 -end.
03:26
It cannot add from the 5 -dash end...