7.2 Transcription and gene expression
IB Syllabus Statements
Understandings:
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Transcription occurs in a 5’ to 3’ direction.
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Nucleosomes help to regulate transcription in eukaryotes.
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Eukaryotic cells modify mRNA after transcription.
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Splicing of mRNA increases the number of different proteins an organism can produce.
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Gene expression is regulated by proteins that bind to specific base sequences in DNA.
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The environment of a cell and of an organism has an impact on gene expression.
Application and skills:
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Application: The promoter as an example of non-coding DNA with a function.
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Skill: Analysis of changes in the DNA methylation patterns.
Videos
Details of Transcription (Part 1)
Post-Transcriptional Modification
Promoters and Transcription
DNA Replication (HL Details)
Modification of RNA in eukaryotes
Inheritance of Acquired Characteristics
Methylation and Epigenetics
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Topic 7.2 Transcription and gene expression HookED SOLO Hexagons
Topic 7.2 Transcription and gene expression SSaQ (Syllabus Statement as Questions)
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Explain the relationship between DNA and mRNA.
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Explain the direction in which transcription happens and the role of RNA polymerase.
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Explain how nucleosomes help to regulate transcription in eukaryotes.
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Outline how eukaryotic cells modify their mRNA after transcription.
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Explain how splicing of mRNA can increase the number of different proteins an organism can produce.
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Explain how gene expression can be regulated by proteins that bind to specific base sequences in DNA.
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Explain why we think that the environment of a cell and of an organism can have an impact on gene expression.
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Outline the role of the promoter as an example of non-coding DNA with a specific function.
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Explain the importance of DNA methylation patterns.
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Discuss the relevance of the ‘nature vs. nurture’ debate with this particular section of the IB Biology syllabus.