An anterior-to-posterior gradient of Erk signaling functions as a positive inducer of head specification

TLS Online TPP Program

#Id: 3362

#Unit 6. System Physiology – Plant

The rate of rotation in intact mitochondria has been estimated at about 6,000 rpm—100 rotations per second

TLS Online TPP Program

#Id: 9439

#Unit 11. Evolution and Behavior

Condition favor polygyny

Resource-based polygyny - Choosing dominant males, a female may be gaining access to good resources.

Harem mating structures - Sometimes males defend a group of females without commanding a resource - based territory. 

Ex- horses and zebras, some deer, lions, and seals.

Communal courting - In some instances, particularly in birds and mammals, males display in designated communal courting areas called leks.

TLS Online TPP Program

#Id: 1574

#Unit 4. Cell Communication and Cell Signaling

Binding of Wnt to its receptor Frizzled (Fz) and to the LRP co-receptor triggers phosphorylation of LRP by GSK3 and CK1, enables Axin to bind LRP & Dsh.

 

TLS Online TPP Program

#Id: 5916

#Unit 3. Fundamental Processes

TLS Online TPP Program

#Id: 7258

#Unit 6. System Physiology – Plant

The rate of CO2 fixation increases with time in the first few minutes after the onset of illumination—a time lag called the induction period