Three signals are required for activation of a naïve T cell

TLS Online TPP Program

#Id: 9539

#Unit 11. Evolution and Behavior

Before Darwin - Christians interpreted “special creation”

TLS Online TPP Program

#Id: 9540

#Unit 11. Evolution and Behavior

Carolus Linnaeus - Classified “related” species into genera, “related” genera into orders, and so on. 

To him, “relatedness” meant propinquity in the Creator’s design.

TLS Online TPP Program

#Id: 9541

#Unit 11. Evolution and Behavior

James Hutton and Charles Lyell – Uniformitarianism

Darwin was greatly influenced by Lyell’s teachings, and he adopted uniformitarianism in his thinking about evolution.

TLS Online TPP Program

#Id: 9542

#Unit 11. Evolution and Behavior

Chevalier de Lamarck

Different organisms originated separately by spontaneous generation from nonliving matter.

We now see a hierarchy of species because they differ in age

Species differ from one another because they have different needs.

TLS Online TPP Program

#Id: 9543

#Unit 11. Evolution and Behavior

TLS Online TPP Program

#Id: 9544

#Unit 11. Evolution and Behavior

Just as muscles become strengthened by work, more strongly exercised organs attract and become enlarged by the “nervous fluid.” 

Acquired during an individual’s lifetime, are inherited—a principle called inheritance of acquired characteristics.