This structure is called a cap.

TLS Online TPP Program

#Id: 6317

#Unit 3. Fundamental Processes

TLS Online TPP Program

#Id: 7114

#Unit 6. System Physiology – Plant

In the absence of ethylene, ETR1 and the other ethylene receptors activate the kinase activity of CTR1. This leads to a repression of the ethylene response pathway, possibly through a MAP kinase cascade. 

The binding of ethylene to the ETR1 dimer results in its inactivation, which causes CTR1 to become inactive.

TLS Online TPP Program

#Id: 3337

#Unit 3. Fundamental Processes

In addition to proteins involved in NER, a variant form of XP called XP-V is caused by a defect in the translesion DNA polymerase, Pol h. The gene encoding Pol h is sometimes called XPV. Individuals with XP-V have a milder form of XP.

TLS Online TPP Program

#Id: 8327

#Unit 2. Cellular Organization

TLS Online TPP Program

#Id: 9204

#Unit 11. Evolution and Behavior

Evolution by natural selection occurs if variation must lead by Ecotypes. 

Ecophene is not be selected by natural selection