Shifting balance theory Shifting balance theory The shifting balance theory is a theory of evolution proposed in 1932 by Sewall Wright, suggesting that adaptive evolution may proceed most quickly when a population divides into subpopulations with restricted gene flow. The name of the theory is borrowed from Wright's metaphor of fitness landscapes (evolutionary landscapes), attempting to explain how a population may move across an adaptive valley to a higher adaptive peak. According to the theory, this movement occurs in three steps: Although shifting balance theory has been influential in evolutionary biology, inspiring the theories of quantum evolution and punctuated equilibrium, little empirical evidence
Caricatures of Charles Darwin and his evolutionary theory in 19th-century England this idea received a wider acceptance. Today we meet the evolutionary theory on T-shirts in the form of graphic arts. Quite often, it is the lifestyle of modern man that is ridiculed. The monkey is now only depicted as the underdeveloped stage of the human and does not function as the caricature of human behaviour any more. Likewise, Darwin has lost his prominent position as a motif for caricatures. Caricatures of Charles Darwin and his evolutionary theory in 19th-century England Before Charles Darwin and his groundbreaking theory of evolution, primates were mainly used as caricatures of human nature. Although comparisons