00:01
Hello all.
00:01
So here the question is label the each spontaneous mutation or mutagen as causing there.
00:09
So here are some mutations are given and according to this which are the causing, which are the causes that is even it is base substitution or radiation or deletion or frame shift mutation or breaks in dna etc.
00:23
So here the first thing that is given is dna polymerize adds a non -complementary base during dna replication.
00:30
So here the dna polymerase, dna polymerase adds a non -complementary base.
00:45
Dna polymerase adds a non -complementary base during the dna replication.
00:59
So the first thing that given is a base substitution or a spontaneous mutation.
01:06
So it is clearly say we can, that is it's a base substitution.
01:15
Base substitution.
01:21
The next thing that given is the depurination.
01:26
Here it is the depurination.
01:33
So the depurination involves, the cause for depurination is again the base substitution.
01:44
Again the base substitution.
01:50
Because the depurination involves loss of purine base forming a apurinic site.
01:57
So here what actually happens is a loss of urine base.
02:03
Loss of purine base.
02:09
Then the next thing is the deamination.
02:14
So in the case of deamination, in case of deamination, it involves the mutation amino group of amino acid converted into ammonia so here in amino acid we know that there is an amino group present in it so the amino group aminogrup converted into ammonium converted into ammonium and this is also a base substitution reaction this is also a base substitution reaction is also a base substitution reaction is also a base because it is the same case as the cytosine is deaminated to form uracrine in the dna.
03:22
And the fifth case, sorry, the next case is, the next case, nucleotide base analogs mutation, the base analog molecules have a very similar structure.
03:39
So, in case of next one, that is fourth one, the nucleotide base analogues, nucleotide, base analogs.
03:56
In this case, it is also a base substitution.
04:07
The cause is base substitution.
04:15
The next is, deeminating agents can convert cytosin to eurasium.
04:24
Deeminating agents...