From: the other end of the sidewalk
Member Rating: 3.3
Message 106 of 106 (763541)
07-26-2015 5:43 PM
Reply to: Message 105 by NoNukes
07-26-2015 1:34 PM
I would have to say that the best evidence for evolution comes from the definition of evolution:
(1) The process of evolution involves changes in the composition of hereditary traits, and changes to the frequency of their distributions within breeding populations from generation to generation, in response to ecological challenges and opportunities for growth, development, survival and reproductive success in changing or different habitats.
The best evidence for evolution is the fact that this is observed in virtually every generation of every living species.
If we look at the continued effects of evolution over many generations, the accumulation of changes from generation to generation may become sufficient for individuals to develop combinations of traits that are observably different from the ancestral parent population.
(2) The process of lineal change within species is sometimes called phyletic speciation, or anagenesis.
However, if anagenesis was all that occurred, then all life would be one species, readily sharing DNA via horizontal transfer (asexual) and interbreeding (sexual) and various combinations. This is not the case, however, because there is a second process that results in multiple species and increases the diversity of life.
(3) The process of divergent speciation, or cladogenesis, involves the division of a parent population into two or more reproductively, an isolated daughter populations, which then are free to (micro) evolve independently of each other.
Both of these processes are observed when we look at multiple generations, and this means that the basic processes of "macroevolution" (as defined and used in evolutionist biology) are observed, known objective facts, and not untested hypothesies, even if major groups of species are not observed forming (which would take many many generations).
(4) The Theory of Evolution (ToE), stated in simple terms, is that the process of anagensis, and the process of cladogenesis, are sufficient to explain the diversity of life as we know it, from the fossil record, from the genetic record, from the historic record, and from everyday record of the life we observe in the world all around us.
This theory is tested by experiments and field observations carried out as part of the science of evolution. It is tested by every new fossil, and every new DNA sequence, and this is why what Mr Jack said in Message 102 is valid: virtually everything we see is confirmation of evolution.
Every living species, every fossil, every DNA sequence.
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