Unit 6: Gene Expression and BioTechnology (Epigenetics)
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Last updated 7:34 PM on 2/5/23
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7 Terms
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what is epigenetics
the study of changes in gene activity that doesnt stem from mutations
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purpose of epigenetics
allows for rapid adaptations to environmental danger
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two ways to change DNA
methylation and histone acetylation
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what is DNA methylation
the addition of a methyl group to cytosine bases in DNA. make DNA condensed and unreadable, essentially switching it off
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what is histone acetylation
the addition of an acetyl group to histones. causes DNA to loosen and turns it on
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what is alternative splicing
a process during intron/exon spicing that allows for different genes
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types of alternative splicing
E₁ - I₁ - E₂ - I₂ - E₃ (E = exon, I = intron)
Normal Splicing > E₁ - E₂ - E₃
Skip Splicing > E₁ - E₃
Intron Inclusion Splicing > E₁ - E₂ - I₂ - E₃
Normal Splicing > E₁ - E₂ - E₃
Skip Splicing > E₁ - E₃
Intron Inclusion Splicing > E₁ - E₂ - I₂ - E₃
Note 
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