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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

Alters or changes some of the nucleotides in mRNA.

elongation

The addition of nucleotides to the growing mRNA strand.

exon

Protein coding region of a gene or mRNA.

initiation

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

intron

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

polyadenylation

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

promoter

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

protein synthesis

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

RNA polymerase

Enzyme that transcribes DNA, making mRNA.

splicing

The removal of introns from mRNA.

termination

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

transcription

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

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:
Sep 04, 2016
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SCI.BIO.325.L.1