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Last updated 1:01 PM on 3/12/25
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12 Terms
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Transcription
The process of copying genetic information from DNA to RNA.
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mRNA
Messenger RNA that carries genetic instructions from DNA to the ribosome for translation.
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Initiation
The first step of transcription where RNA polymerase binds to the promoter region and unwinds DNA.
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Elongation
The stage of transcription where RNA polymerase adds complementary RNA nucleotides to form the mRNA strand.
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Termination
The final phase of transcription where transcription stops when RNA polymerase reaches a stop sequence and mRNA detaches.
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Splicing
The process in mRNA processing that removes introns (non-coding regions) and joins exons (coding regions).
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Polyadenylation
The addition of a poly-A tail to mRNA for protection and aid in export from the nucleus.
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Introns
Non-coding regions of RNA that are removed during splicing.
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Exons
Coding regions of RNA that are joined together after splicing.
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Promoter
The region of DNA where RNA polymerase binds to initiate transcription.
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Flow of Genetic Information
The flow of genetic information follows the pattern of DNA → RNA.
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Eukaryotic Cells
Cells that have a nucleus; transcription occurs in the nucleus of these cells.
Flashcards (43)