1.What is a consensus sequence, and how is this used to initiate the processes of DNA...
1.What is a consensus sequence, and how is this used to initiate the processes of DNA replication, transcription and translation?
2.Outline several mechanisms by which DNA or RNA (especially mRNA) can be protected from degradation and have “extended life”.
Homework Answers
1.
Consensus sequence refers to a short nucleotide sequence which is bade up of calculated order of nucleotides whose frequency of occurring is a specific region rarely varies.
Consensus sequences present in DNA and RNA play a very important role in initiation processes of DNA replication, transcription and translation.
DNA replication initiates when the origin of replication site, a consensus sequence rich in AT, binds with the pre replication complex.
Initiation of transcription begins when different transcription factors bind with the promoter sequence and enhancer sequence which are consensus sequences present in the upstream of transcription start site.
Initiation of translation begins when different initiation factors binds to the consensus sequences of the mRNA like the cap region and the translation start site (AUG).
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