Gene Regulation
(pgs. 309-312)

Gene in a portion of DNA
Gene in a portion of DNA

Gene Regulation is how the DNA decides which genes to express.
To do this, there are specific proteins, known as repressors, that choose when to activate and deactivate the genes.

Throughout the masses of bases in the DNA sequence, patterns begin to emerge. These patterns determine specific genes.

Genes are a sequence of DNA that codes for a protein and thus determines a trait.

A group of genes that operate together is known as an operon.
click here to see the segments of a gene







SEE TEXTBOOK PAGE 310 (figure 12-13) TO DETERMINE HOW REPRESSORS HELP IN GENE ACTIVATION IN BACTERIA CELLS

EUKARYOTIC GENE REGULATION
(pg 311): more complex than that of prokaryotes, and are usually controlled individually. Because of this, operons are usually not found in eukaryotic genes.

Differentiation (pg 312): the specialization in structure and function of genes.
-happens during embryonic development.
-controled by hox genes, or "master control genes"