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Describe how MRNA is formed by transcription in eukaryotes

Describe how MRNA is formed by transcription in eukaryotes. could you help with this question
(edited 2 years ago)
Transcription is the process of making messenger RNA from a DNA (in the nucleus)
1) DNA helicase breaks the hydrogen bonds between the DNA helix
2) RNA nucleotides base pair (by forming temporary hydrogen bonds) with the exposed DNA template strand
3) RNA polymerase forms phosphodiester bonds between adjacent RNA nucleotides
4) RNA polymerase moves along the DNA rewinding the DNA as it moves along
5) Transcription produces pre-mRNA; which has to be spliced (removal of non coding regions called introns) to form mRNA.
Reply 2
Original post by Hellllpppp
Transcription is the process of making messenger RNA from a DNA (in the nucleus)
1) DNA helicase breaks the hydrogen bonds between the DNA helix
2) RNA nucleotides base pair (by forming temporary hydrogen bonds) with the exposed DNA template strand
3) RNA polymerase forms phosphodiester bonds between adjacent RNA nucleotides
4) RNA polymerase moves along the DNA rewinding the DNA as it moves along
5) Transcription produces pre-mRNA; which has to be spliced (removal of non coding regions called introns) to form mRNA.

isnt it DNA polymerase not RNA polymerase that rewinds the DNA helix
Reply 3
Original post by a_aish
isnt it DNA polymerase not RNA polymerase that rewinds the DNA helix

It would be DNA polymerase during DNA replication, but RNA polymerase in translation (I think!)
Reply 4
Original post by Hellllpppp
Transcription is the process of making messenger RNA from a DNA (in the nucleus)
1) DNA helicase breaks the hydrogen bonds between the DNA helix
2) RNA nucleotides base pair (by forming temporary hydrogen bonds) with the exposed DNA template strand
3) RNA polymerase forms phosphodiester bonds between adjacent RNA nucleotides
4) RNA polymerase moves along the DNA rewinding the DNA as it moves along
5) Transcription produces pre-mRNA; which has to be spliced (removal of non coding regions called introns) to form mRNA.

RNA polymerase has intrinsic helicase activity and so there is no need for DNA helicase, unlike in DNA replication.

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