Cellular Control- post-transcriptional gene regulation

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  • Created by: Anca.a
  • Created on: 31-03-18 12:55
What are introns?
non-coding DNA in between genes, not expressed.
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What are exons?
coding or expressed regions of DNA (genes)
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First step:
During transcription all DNA, including introns, is transcribed to mRNA = primary mRNA
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Second step:
Primary mRNA is edited - RNA introns are removed, remaining RNA exons are then joined together = secondary mRNA
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What may happen to some RNA introns?
may become non-coding transcription factors
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Third step:
Exons can be spliced together in different ways so that the same gene can code for more than one protein.
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Other cards in this set

Card 2

Front

What are exons?

Back

coding or expressed regions of DNA (genes)

Card 3

Front

First step:

Back

Preview of the front of card 3

Card 4

Front

Second step:

Back

Preview of the front of card 4

Card 5

Front

What may happen to some RNA introns?

Back

Preview of the front of card 5
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