Following the acceptance of evolutionism, biologists tried with limited success to reconstruct the history of life on Earth, and also debated the mechanism of evolution. Many alternatives to Darwinian natural selection were tried out, including a revived version of Lamarck's theory of the inheritance of acquired characters, and evolution by saltations (which paved the way for Mendelian genetics).
Keywords: biometrics; Darwinism; Lamarckism; Mendelism; orthogenesis




