Mutations in three broad classes of genes play key roles in cancer induction: 

Proto-oncogenes genes
Tumor-suppressor genes
Genome maintenance genes

TLS Online TPP Program

#Id: 9569

#Unit 11. Evolution and Behavior

Dollo’s law:  A biological generalization positing that complex characters, once lost in evolution, are extremely unlikely to reappear and thus the loss of complex characters is virtually always irreversible.

TLS Online TPP Program

#Id: 1872

#Unit 10. Ecological Principles

α12 - Per capita competitive effect on species 1 of species 2.

TLS Online TPP Program

#Id: 10281

#Unit 6. System Physiology – Plant

ABA signaling in guard cells is largely mediated through the second messenger Ca2+.

TLS Online TPP Program

#Id: 9517

#Unit 6. System Physiology – Plant

During infection, most bacteria remain in extracellular spaces and use a specialized mechanism, the type III secretion system (T3SS), to deliver bacterial effector proteins into the plant cell

TLS Online TPP Program

#Id: 2008

#Unit 8. Inheritance Biology