Question
What is the difference between transcription in prokaryotic and eukaryotic cells? Compare.
| S.No. | Prokaryotic Transcription | Eukaryotic Transcription |
| 1 | It occurs in contact with cytoplasm. | It occurs inside the nucleus. |
| 2 | There is no specific period for its occurrence. | Major part of transcription occurs in $G _1$ and $G _2$ phases |
| 3 | Processing of released RNA occurs in cytoplasm. | Processing occurs inside the nucleus. |
| 4 | It is coupled to translation. | Transcription and translation are spacially separate. |
| 5 | Products of transcription become effective in situ. | Products of transcription come out of the nucleus for functioning in cytoplasm. |
| 6 | There is only one RNA polymerase. | There are three types of RNA polymerases. |
| 7 | RNA polymerase does not have separate transcription factors. | Transcription factors are involved in recognition of promoter site. |
| 8 | An enhancer is usually absent. | An enhancer may be present alongwith promoter. |
| 9 | mRNA is generally polycistronic. | mRNA is generally monocistronic. |
| 10 | Splicing is generally not required. | In most of the cases splicing is required for removing intervening sequences. |
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