The lac operator is 21-bp sequence with twofold symmetric and is recognized by two subunits of Lac repressor

 

TLS Online TPP Program

#Id: 6502

#Unit 3. Fundamental Processes

Sites of phosphorylation on the CTD serve as a recognition or anchor point for other proteins to dock with the polymerase. The capping enzyme (guanylyl transferase), which adds the G residue to the 5' end of newly synthesized mRNA, binds to CTD phosphorylated at serine 5, the first phosphorylation event catalyzed by TFIIH. 

P-TEFb leads to recruitment of a set of proteins called SCAFs to the CTD, and they in turn bind to splicing factors. This may be a means of coordinating transcription and splicing.

TLS Online TPP Program

#Id: 6901

#Unit 8. Inheritance Biology

Chromosomes are classified into four basic

Metacentric chromosome

Submetacentric chromosome

Acrocentric chromosome

Telocentric chromosome

TLS Online TPP Program

#Id: 1856

#Unit 3. Fundamental Processes

Promoters that do not contain a TATA element are called TATA-less promoters. Surveys of promoter sequences suggest that 50% or more of promoters may be TATA-less.

TLS Online TPP Program

#Id: 6636

#Unit 8. Inheritance Biology

Three-point test cross mapping 

TLS Online TPP Program

#Id: 3682

#Unit 3. Fundamental Processes

IF3 is critical for a new cycle of translation.