Artificial selection.
Galapagos Islands are the islands where Charles Darwin observed variation among organisms.
Charles Darwin
When studying and proving the theory of evolution, Darwin notice that variations existed within species. Species includes organisms that are closely related and can mate to produce fertile offspring. Variation is a difference. Darwin noticed that there were more than one organism inside a species.
Linnaeus retained typological thinking of human variation. Basically, Linnaeus want to diverge a species into several types (perhaps sub species) while Darwin focuses on variation. Linnaeus wants to divide human by types while Darwin says there is no type in human. He emphasis on variation among species.
variation!
Galapagos Islands are the islands where Charles Darwin observed variation among organisms.
charles Darwin was an amazing person
Variation?!?! That was an obvious observation of naturalists that opposed Darwin's concepts totally. Unless you mean the heritability that leads to variation? Explaining that variation was the problem. Creationists of the time explained this by positing god's whimsy in designing his species, but this was shown to be nonsense as natural processes are at work in variation and this can be shown experimentally. The concept of natural selection explained how that natural variation was selected on beneficial traits. What Darwin did not understand is how that variation was passed on to progeny. His explanation was wrong.
monkey
plant
domestication
Darwin said that artificial selection was when nature provided the variation, and humans selected those variations that they found useful. Inherited variations are differences that are passed from parents to offspring
I think it isn't a weak or invalid concept.
Charles Darwin
Through reproductive variation and differential reproductive success (ie. variation and selection).
Orphan Black - 2013 Variations Under Domestication 1-6 was released on: USA: 4 May 2013
First, he had no idea how heritable traits pass from one generation to the next. Second, although variation in heritable traits was central to Darwin's theory, he had no idea how that variation appeared.