In Paracentric inversion - a single crossover takes place in the inverted region an unusual structure results

TLS Online TPP Program

#Id: 607

#Unit 2. Cellular Organization

The E. coli trp operon contains the 5 genes Trp-EDCBA for the anabolic enzymes to make the tryptophan.

TLS Online TPP Program

#Id: 582

#Unit 2. Cellular Organization

CAP–cAMP increases the rate of formation of the closed promoter complex, CAP–cAMP provides CPC for conversion to the open promoter complex. 

Thus, the net effect of CAP–cAMP is to increase the rate of open promoter complex formation.

TLS Online TPP Program

#Id: 1152

#Unit 7. System Physiology – Animal

Endothelium & epithelial cells, effectively prevents filtration of plasma proteins, because of strong negative electrical charges (associated with the proteoglycans).

TLS Online TPP Program

#Id: 2445

#Unit 3. Fundamental Processes

The b subunit of RNA polymerase is implicated by two types of mutation. 

First, mutations in the rpoB gene can reduce termination at a rho-dependent site. 

Second, mutations in rpoB can restore the ability to terminate transcription at rho-dependent sites in rho mutant bacteria.

TLS Online TPP Program

#Id: 7247

#Unit 5. Developmental Biology

T1 cells are mIgMhi, mIgD -/lo, CD21-, CD23-, CD24+, and CD93+. 

T2 cells differ from T1 cells in having higher levels of mIgD and in expressing CD21 and CD23.