Acertain regulatory gene is involved in controlling the expression of other genes. in studying this regulatory gene, a scientist discovers that it encodes for an enzyme that causes histone deacetylase (the removal of acetyl groups from histone tails). based on this information, how would you predict that this enzyme regulates gene expression? a. it causes tighter packing of the chromatin at the target gene to inhibit translation. b. it causes decompression of the chromatin at the target gene to inhibit translation. c. it activates gene promoters to signal for the biding of rna polymerase. d. it activates rna processing by removing introns and splicing exons together.