1. Daily Warm-Up January 8th
What is adrenoleukodystrophy?
HW: Test corrections due 1/17
Turn in: Reindeer Genetics extra credit

2. Gene Expression Why must genes be regulated? Transcription is most
Environmental changes, energy cost (EVOLUTION!!!!!!!)
Transcription is most
common for control
Prokaryotes and
eukaryotes!!!!
House-keeping genes transcribed always

3. Prokaryotic Gene Regulation
Proteins that bind to DNA can control transcription
What does this allow for?
Act as a light switch- turn genes on or off
Operon- group of genes regulated together

4. E. Coli and the Lac Operon
Only turns on lac operon when needed

5. Promoters and Operators
Promoter- helps RNA polymerase to bind to DNA
Operator- site where a repressor can bind

7. Daily Warm-Up January 9th
What causes a mutation?
HW: Nothing (Quiz on Monday over 13.4)
Turn in: Lorenzo’s Oil movie sheet if haven’t done so already

8. Eukaryotic Gene Regulation
Transcription factors- control expression of genes
Why so complex?
Cell specialization

9. Gene Regulation and Development
Early in life certain genes turned on and off
Allows for differentiation
What is this again?

10. Homeotic Genes Regulation of what develops where Homeobox genes
Code for transcription
factors that control
developmental genes