1. Gene regulation
Section
Pages

2. 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

3. TATA
Unique to eukaryotic genes
Helps in regulation

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

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

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

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

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