TLS Online TPP Program

#Id: 9197

#Unit 11. Evolution and Behavior

Stabilized natural selection

Favor intermediate phenotype but eliminate lower and higher-grade phenotype

It introduced homogeneity in the population

Exp - clutch size of birds that lay too many or too few eggs per nest have lower fitness values than do those that lay an intermediate number of eggs

TLS Online TPP Program

#Id: 9292

#Unit 6. System Physiology – Plant

TLS Online TPP Program

#Id: 9921

#Unit 4. Cell Communication and Cell Signaling

Cell-Mediated Immunity against Virus

Both CD8+ TC cells and CD4+ TH1 cells are required components of the cell-mediated antiviral defense.

Activated TH1 cells produce IL-2, IFN-ϒ, and tumor necrosis factor-α.

TLS Online TPP Program

#Id: 10055

#Unit 4. Cell Communication and Cell Signaling

Growth factors and EGFs are synthesized as TM proteins, regulated cleavage of the precursor by members of the ADAM protease releases the active molecule into the extracellular space.

TLS Online TPP Program

#Id: 1740

#Unit 4. Cell Communication and Cell Signaling

Daudi tumor cells, which are unable to synthesize β 2-microglobulin.