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The following enzymes or processes are known to regulate eukaryotic gene expression. in the blank provided by each enzyme or process, enter the number 1 if the enzyme or process increases gene expression or the number 2 if the enzyme or process decreases gene expression.
(a) histone acetyltransferases (hats)
(b) histone deacetylases (hdacs)
(c) acetylation
(d) deacetylation
(e) decreased attaraction between dna and histones
(f) increased attraction between dna and histones
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