A Quote by Hans Adolf Krebs
The concept of evolution postulates that living organisms have common roots, and in turn, the existence of common features is powerful support for the concept of evolution.
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The existence of common features in different forms of life indicates some relationship between the different organisms, and according to the concept of evolution, these relations stem from the circumstance that the higher organisms, in the course of millions of years, have gradually evolved from simpler ones.
According to the concept of transformational evolution, first clearly articulated by Lamarck, evolution consists of the gradual transformation of organisms from one condition of existence to another.
And, you know, the fact is, if you believe in evolution, we all have a common ancestor, and we all have a common ancestry with the plant in the lobby. This is what evolution tells us. And, it's true. It's kind of unbelievable.
I am of course getting angry if biologists try to use the general concept 'chance' in order to explain phenomena which are so typical for living organisms as, for instance, those appearing in the biological evolution.
In scientific thought, the concept functions all the better for being cut off from all background images. In its full exercise, the scientific concept is free from all the delays of its genetic evolution, an evolution which is consequently explained by simple psychology. The virility of knowledge increases with each conquest of the constructive abstraction.
An attempt to study the evolution of living organisms without reference to cytology would be as futile as an account of stellar evolution which ignored spectroscopy.
As the haves and have-nots split further and further apart, destabilization ultimately leads to revolution, not evolution. If we're playing the evolution vs. revolution game, we are closer to revolution than we are to evolution in my concept.
All scientists agree that evolution has occurred - that all life comes from a common ancestry, that there has been extinction, and that new taxa, new biological groups, have arisen. The question is, is natural selection enough to explain evolution? Is it the driver of evolution?
All scientists agree that evolution has occurred-that all life comes from a common ancestry, that there has been extinction, and that new taxa, new biological groups, have arisen. The question is, is natural selection enough to explain evolution? Is it the driver of evolution?
That there is an evolution of one sort or another is now common ground among scientists. Whether or not that evolution is directed is another question.
It has become evident that the primary lesson of the study of evolution is that all evolution is coevolution: every organism is evolving in tandem with the organisms around it.
The theory of natural selection is the centerpiece of The Origin of Species and of evolutionary theory. It is this theory that accounts for the adaptations of organisms, those innumerable features that so wonderfully equip them for survival and reproduction; it is this theory that accounts for the divergence of species from common ancestors and thus for the endless diversity of life. Natural selection is a simple concept, but it is perhaps the most important idea in biology.
Darwinian evolution is slow and gradual, step by step. Such an evolution can explain micro-evolution but not macro-evolution. For example, how did the eye evolve? The idea behind Darwinism is that organisms adapt, and that nature selects only those genetic changes which are the mutations that serve a good purpose for adaptation. So taken this way, the eye cannot develop gradually because one-thousandth or one-millionth of an eye would be of no value for survival. So generally this question rules out Darwinism as an adequate theory for macro-evolution.
What I was concerned with was life: what are the major features that are common to all living organisms that subtly define life. So I looked at the whole problem as a chemist, as a biochemist, and as a molecular biologist.
Evolutionary biologists often appeal to parsimony when they seek to explain why organisms "match" with respect to a given trait. For example, why do almost all the organisms that are alive today on our planet use the same genetic code? If they share a common ancestor, the code could have evolved just once and then been inherited from the most recent common ancestor that present organisms share. On the other hand, if organisms in different species share no common ancestors, the code must have evolved repeatedly.
The main plank in the National Socialist program is to abolish the liberalistic concept of the individual and the Marxist concept of humanity and to substitute for them the folk community, rooted in the soil and bound together by the bond of its common blood.
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