The most important missing evidence in Darwin's theory in 1859 was a. the source of genetic variation. Natural selection tends to reduce variation in gene pools. The earth is a. 6,000 years old and populations are unchanging. Lamarck b. Cuvier c. The taxonomic system developed by Linnaeus is best described as a a. branching diagram of interrelationships.
Darwinian evolution is based on the existence, in every population, of a. random mating.