Thus, asexual organisms very frequently show the continuous variation in form ( often in many different directions ) that Darwin expected evolution to produce, making their classification into " species " ( more correctly, morphospecies ) very difficult.
22.
"Dispositif " ( post-cinema ) and practice ( Live Media ) thus represent two types of continuous variation through which Netmage questions possible currents in new media aesthetics, summoning artists and visual operators from diverse disciplines, in a context reminiscent of the Happening.
23.
In the article on Polymorphism ( biology ), polymorphism is defined as a " discontinuous variation in a single population . . . " What does " discontinuous " mean in this sentence, and in what way does it differ from a continuous variation?
24.
In 1918, Fisher produced the paper " The Correlation between Relatives on the Supposition of Mendelian Inheritance, " which showed how the continuous variation measured by the biometricians could be the result of the action of many discrete evolution of industrial melanism in peppered moths.
25.
Fritsch and Almeda, on the other hand, considered all Jamaican " Symplocos " to belong to a single species, " S . octopetala "; in their opinion, the characters that were used to distinguish between species to be part of the continuous variation within a single species.
26.
This procedure, which provided Copland with more formal flexibility and a greater emotional range than in his earlier music, is similar to Schoenberg's idea of " continuous variation " and, according to Copland's own admission, was influenced by the twelve-tone method, though neither work actually uses a twelve-tone row.
27.
According to his analysis, both of the main themes of the first movement are taken from the same germ motive, which permeates not only the exposition but the entire first movement of the quartet, " in a process of continuous variation ", and compares this high thematic density to the music of Joseph Haydn.
28.
The first steps in understanding motion, and continuous variation in general, occurred in the 14th century with the work of the scientists of the Merton School, at Oxford in the 1330s and 1340s . ( Franklin notes that there is no phrase in ancient Greek or Latin equivalent to " kilometres per hour " ).
29.
In a series of papers starting in 1918 and culminating in his 1930 book " The Genetical Theory of Natural Selection ", Fisher showed that the continuous variation measured by the biometricians could be produced by the combined action of many discrete genes, and that natural selection could change allele frequencies in a population, resulting in evolution.
30.
At first, geneticists tended to support mutationism; but in the 1920s and 1930s a group of theoretical geneticists & ndash; particularly Ronald Fisher, J . B . S . Haldane and Sewall Wright & ndash; showed that Mendel's laws could explain continuous variation in biological characteristics; and that natural selection could act cumulatively, giving rise to large changes.
