00:01
In this question, we are asked about the fact that dna replication relies on dna polymerase, and how does this correlate with the suggestion that the earliest genes were made from rna? so this is really asking about that rna world hypothesis, where basically scientists hypothesized that the original information, genetic information was encoded on rna instead of dna.
00:34
So original genetic code on rna rather than dna.
00:46
Now, evidence for this would be the fact that rna is self -replicating, meaning that it can polymerize and replicate itself without the need for enzymes that are proteins to catalyze that.
01:06
Reaction it can occur on its own so no need for proteins and as we know for proteins to assemble we need rna because there would be a paradox that emerges right because for a protein to be assembled right we need an enzyme such as dna polymerase to copy that to copy the dna originally during transcription and then during translation we need rna so m rna and t rna in order to assemble that protein so we need dna polymerase this is during transcription and also we need rna specifically m and t rna along with other rnas during translation in order for that protein assembly to occur and as we know, dna polymerase is an enzyme.
02:25
So, as we said there, it was an enzyme, and rna must be involved...