Evolutionary Relationships Quotes

What Darwinian theory shows us is that all human races are extremely close to each other. None of them is in any sense ancestral to any other; none of them is more primitive than any other. We are all modern races of exactly equal status, evolutionarily speaking.

The best opinion now is, that there are multitudinous forms which are not sufficiently differentiated to be distinctively either plant or animal, while, as respects ordinary plants and animals, the difficulty of laying down a definition has become far greater than ever before.

It is interesting that the U.S. has this very strong proportion of the population that rejects scientific conclusions about the age of the Earth and about evolutionary relationships between species, including humans.

The science of systematics has long been affected by profound philosophical preconceptions, which have been all the more influential for being usually covert, even subconscious.

Taxonomy (the science of classification) is often undervalued as a glorified form of filing-with each species in its folder, like a stamp in its prescribed place in an album; but taxonomy is a fundamental and dynamic science, dedicated to exploring the causes of relationships and similarities among organisms. Classifications are theories about the basis of natural order, not dull catalogues compiled only to avoid chaos.

Most of the tree of life is effectively arranged.

Genome sequencing has changed taxonomy.

Very close cousins like humans and chimps have almost all their genes in common. Slightly less close cousins like humans and monkeys still have recognizably the same genes. You could carry on right on down to humans and bacteria, and you will find continuous compelling evidence for the hierarchical tree of cousinship.

I am a taxonomist, I work in the descriptive, narrative sciences of natural history. Unfortunately there is this status ordering from physics, the queen of the sciences up on top, down through a bunch of squishy subjects, ending up with sociology and psychology on the bottom. Palaeontologists are not much above that in their conventional ordering.

Molecular genetics can show off some surprising relationships like, for example, the close relationship of whales to hippopotamuses, which I think nobody ever guessed until molecular data was looked at. The closest relatives of whales are hippopotamuses, even closer than any other cloven-hoofed animals.

It is a truly wonderful fact - the wonder of which we are apt to overlook from familiarity - that all animals and all plants throughout all time and space should be related to each other in group subordinate to group.

Extinction has only separated groups: it has by no means made them; for if every form which has ever lived on this earth were suddenly to reappear, though it would be quite impossible to give definitions by which each group could be distinguished from other groups, as all would blend together by steps as fine as those between the finest existing varieties, nevertheless a natural classification, or at least a natural arrangement, would be possible.