BIO 1140 Lecture Notes - Lecture 7: Dicer, Transposable Element, Microrna
4 Apr 2016
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Regulaion is achieved through operons; geneic switches that control transcripion. Iaci lac repressor if there is no lactose, it will go and bind with promotor . Clamping the area, blocking the polymerase cannot move anymore forward to transcript downstream. Q&a: the product of the transcripion of an operon is one set of related mrnas that code for funcionally related proteins. *even if in absent of lactose, some of the operator may fall of and there may sill be a small amount of lactase enzyme produced. The beta-galactosidase in the enzyme allows the transform of lactose to. Allolactose to inacivate lac repressor detach of repressor formaion of mrna. Q: in eukaryotes, diferences in gene expression between various cell types in one individual are best explained by _________- A: enhancers recognized by acivators found only in speciic cell types. **various cell types have the exact same set of gene!
