The Wnt-Ca2+ pathway is initiated by Frizzled receptors activating a classical G protein-coupled signaling pathway.

TLS Online TPP Program

#Id: 2210

#Unit 11. Evolution and Behavior

Alfred Russel Wallace- Who was collecting specimens in the Malay Archipelago, had independently conceived of natural selection.

TLS Online TPP Program

#Id: 2211

#Unit 11. Evolution and Behavior

Darwin’s evolutionary theory- Evolution as such is the simple proposition that the characteristics of organisms change over time.

TLS Online TPP Program

#Id: 2212

#Unit 11. Evolution and Behavior

Darwin’s evolutionary theory- Common descent

TLS Online TPP Program

#Id: 2213

#Unit 11. Evolution and Behavior

Gradualism is Darwin’s proposition that the differences between even radically different organisms have evolved by small steps through intermediate forms,  not by leaps

TLS Online TPP Program

#Id: 2214

#Unit 11. Evolution and Behavior

Populational change is Darwin’s hypothesis that evolution occurs by changes in the proportions (frequencies) of different variant kinds of individuals within a population.

TLS Online TPP Program

#Id: 3162

#Unit 11. Evolution and Behavior

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