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Transcription factors
proteins to control gene regulation with
What do transcription factors ensure?
It ensures that a gene is used at the right time and that proteins are made in the right amounts
Two main sets of transcription factors
One set forms complexes that guide and stabilize the binding of the RNA polymerase to the promoter
What is the other set?
Incudes regulatory proteins that help control the rate of transcription
Repressor proteins
bind to specific sites on DNA and prevent the binding of activators
What is DNA wrapped around
histones to form nucleosomes
Hox genes
group of genes that controls differentiation
What are they important for?
determing the body plan of an organism
Homebox genes code for
transcription factors and are activein the zones of the embryo in the same order as the genes on the chromosomes
What happens wen there is a mutation in hox genes
Can affect the order of structures along this axi
RNA intereference
small pieces of double stranded RNA in the cytoplasm of the cell are cut by an enzyme called dicer
Interfering RNA
reulting double stranded segments
What do they bind to?
sequence specific sections of mRNA in the cyoplasm, causing the mRNA in this region to be cut and prevneting its translation
Note 
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