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4.5: Transcription of DNA to RNA

Difficulty Level: At Grade Created by: CK-12
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Vocabulary

editing

editing

Alters or changes some of the nucleotides in mRNA.
elongation

elongation

The addition of nucleotides to the growing mRNA strand.
exon

exon

Protein coding region of a gene or mRNA.
initiation

initiation

The beginning of transcription; occurs when RNA polymerase binds to the promoter of a gene.
intron

intron

Non-coding or non-regulatory region of a gene or mRNA; removed prior to translation.
polyadenylation

polyadenylation

Adds a polyA (adenine bases) tail to the mRNA; signals the end of mRNA.
promoter

promoter

Region of a gene where a RNA polymerase binds to initiate transcription of the gene.
protein synthesis

protein synthesis

Process in which cells make proteins; includes transcription of DNA and translation of mRNA.
RNA polymerase

RNA polymerase

Enzyme that transcribes DNA, making mRNA.
splicing

splicing

The removal of introns from mRNA.
termination

termination

The ending of transcription; occurs when RNA polymerase crosses a stop (termination) sequence in the gene.
transcription

transcription

Process in which genetic instructions in DNA are copied to form a complementary strand of mRNA.
translation

translation

Process in which genetic instructions in mRNA are read to synthesize a protein.

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Difficulty Level:
At Grade
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Date Created:
Feb 24, 2012
Last Modified:
May 17, 2016
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