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Summary Epigenetics Notes and summaries

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2024/2025 Written for academic year
Institution 12th Grade
Course Life Sciences
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Comprehensive IEB notes on epigenetics Covers: - The epigenome - Gene Control - Cancer and gene control

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Exigenetics

-Histones

·
Protein
-


Provides structure for DNA

-DNA wraps around histone



·
8 histones form nucleosome

Helps give structure to DNA


Organize the
-




genome


·
Histones control gene expression
-


Contain "marks"
Marks form
epigenome


Exigerane-

Chemical compounds that mark
genes
to adjust gene expression



Made of tags
·




-

Found on DNA wrapped histones

Shapes physical
·
structure of
genome

Tightly
·

wraps inactive
genes
Makes genes unreadable
·
Relaxes active
genes
Makes readable and easily accesible
genes

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