Gene regulation Section 12- 5 Pages 309-312.

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Gene regulation Section 12- 5 Pages 309-312

Regulation of genes Operon is a group /cluster of genes tha work together Lac genes turned on by lactose (enzyme) and turned off by a repressor Genes can use proteins to help speed up transcription ex.: open up a tightly packed chromatin attracts the RNA polymerase blocks access to a gene

TATA Unique to eukaryotic genes Helps in regulation

Hox Genes Control development & differentiation Cell specialization Tissue specialization All are descended from the genes of a common ancestor

A group of genes that operates together is a(an) promoter. operon. operator. intron.

Repressors function to turn genes off. produce lactose. turn genes on. slow cell division.

Which of the following is unique to the regulation of eukaryotic genes? promoter sequences TATA box different start codons regulatory proteins

Organs and tissues that develop in various parts of embryos are controlled by regulation sites. RNA polymerase. hox genes. DNA polymerase.