Pausing by the polymerase at the site of termination allows time for rho factor to translocate to the hybrid stretch and is an important feature of termination.

TLS Online TPP Program

#Id: 571

#Unit 2. Cellular Organization

Constitutive mutations occur at 8 positions in the operator between +5 and +17 called OC

TLS Online TPP Program

#Id: 10256

#Unit 6. System Physiology – Plant

Precocious germination in the ABA-deficient vp14 mutant of maize. The VP14 protein catalyzes the cleavage of 9-cis-epoxycarotenoids to form xanthoxal, a precursor of ABA. 

TLS Online TPP Program

#Id: 1479

#Unit 4. Cell Communication and Cell Signaling

Characterization of the disease-causing deletion showed that the absence of two miRNAs, miR-15-a and miR-16-1, causes chronic lymphocytic leukemia (CLL)

TLS Online TPP Program

#Id: 775

#Unit 3. Fundamental Processes

The sigma cycle. RNA polymerase binds to the promoter causing local melting of the DNA. As the polymerase moves elongating the RNA, the s-factor dissociates and joins with a new core polymerase to initiate another RNA chain.

TLS Online TPP Program

#Id: 1064

#Unit 5. Developmental Biology

In the floral meristem, the FT protein forms a complex with FLOWERING D (FD)