Daily Warm-Up January 8th

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Presentation transcript:

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

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

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

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

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

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

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

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

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