: a person who holds a particular office or position. Voters will have the chance to see the incumbent and her opponent in a series of three debates. Incumbents often have an advantage in elections. [+] more examples [-] hide examples [+] Example sentences [-] Hide examples. incumbent /ÉªnËkÊmbÉnt/ adjective.incumbent. /ÉªnËkÊmbÉnt/. adjective. Learner's definition of INCUMBENT. always used before a noun formal. : holding an office or position. the incumbent president/mayor/senator.oters will have the chance to see the incumbent and her opponent in a series of three debates.
In other words, the Modern Synthesis is a theory about how evolution works at the level of genes, phenotypes, and populations whereas Darwinism was concerned mainly with organisms, speciation and individuals.
The modern synthesis[a] was the early 20th-century synthesis reconciling Charles Darwin's and Gregor Mendel's ideas in a joint mathematical framework that established evolution as biology's central paradigm.[2][3] Julian Huxley invented the term in his 1942 book, Evolution: The Modern Synthesis. The 19th century ideas of natural selection by Darwin and Mendelian genetics were put together with population genetics, between around 1918 and 1932.