If survival of juveniles is very poor and unpredictable but adult are more likely to survive - Selection favors repeated reproduction and long reproductive life.

TLS Online TPP Program

#Id: 9369

#XL - T Zoology

Negative regulators of TGF-β signaling are induced by TGF-β signaling (Example of Negative feedback): 

Ski 

SnoN 

I-Smads (Smad7)

TLS Online TPP Program

#Id: 9553

#XL - T Zoology

Natural selection was Darwin’s brilliant hypothesis, that accounts for adaptations, features that appear “designed” to fit organisms to their environment.

TLS Online TPP Program

#Id: 8115

#XL - Q Biochemistry

Excreted S1P provokes many different cell and tissue effects, among them inflammation in allergic reactions, cell proliferation, angiogenesis, malignant transformation, and movement and migration of certain cells.

TLS Online TPP Program

#Id: 7937

#XL - Q Biochemistry

Once the ER signal sequence emerges from the ribosome, it is bound by a signal recognition particle (SRP)

TLS Online TPP Program

#Id: 9684

#XL - T Zoology

Insulin receptor leads to the activation of PKB