00:01
The question is asking that transcription is similar to dna replication in what respect? dna replication in what respect? in what respect, okay? so let's discuss the options given to it.
00:25
The options given to us is that first one is it requires a molecule, it requires a molecule or dna helicase so these are the option given to us.
00:45
Option 1 states that it requires a molecule of dna to unwind dna.
00:50
Second statement says it uses the same enzyme as that used in synthesis of dna primer during the dna replication.
00:57
And the third says the newly synthesized rna remains paired to the template dna.
01:01
The fourth says that nucleotide polymerization takes place in 5 -3 direction.
01:07
Let's look into each and every option very closely.
01:14
When you talk about it requires a molecule of dna helix to unwind the dna.
01:19
During the transcription the unwinding of dna does not take place as the mrna is present there template dna.
01:31
Template dna now here the m rna is gets ad up and thereby transcription takes place in the case of dna replication the semi - while dna replication this is a strand this is the parent strand and semi -conservative path is chosen one is parent dna and one is the new dna it is considered as template dna and it is in the polarity of 3 -to -5 -dash and the synthesis of it takes place in 5 -2 -3 -direction.
02:17
Suppose this is 5 -2 -3 -dash.
02:24
In this direction, the nucleotide keeps on adding.
02:30
And here is a helicase enzyme that unwinds that unwinds that unwinds, the helical dna, herical dna.
02:48
While this, while the process of transcription, no unwinding is required.
02:55
Okay, since this is a template we have acquired and with the help of this template, mrna is coded...