briefly explain how transcription helps in transportation??
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Answer:
Transcription is the first step in the synthesis of proteins from specific gene sequences. In this process, the genetic information in the DNA is copied to an mRNA with the help of an enzyme called RNA polymerase and several transcription factors.
Once the mRNA is formed, it undergoes a series of transformations called post-transcriptional modifications to form a mature mRNA, which is transported from the nucleus to the cytoplasm where protein synthesis occurs with the help of ribosomes.
In prokaryotes such as bacteria, the initial mRNA produced after transcription is mature and fully functional to take part in the subsequent steps of protein synthesis. Therefore, the need for post-transcriptional modifications is eliminated.
Also, as the prokaryotic cell lacks a clearly defined nucleus and both transcription and translation takes place in the cytoplasm, there is no need to transport the mRNA to the cytoplasm after transcription, making the entire process of gene expression much simpler compared to that in eukaryotes.
Explanation:
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