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originally posted by: PhotonEffect
Why is artificial selection (breeding, farming etc), not considered to be evolution?
originally posted by: Barcs
My guess is that it's because the selection is not natural nor is it for survival & procreation. It's based on how useful the animals are to humans.
originally posted by: Barcs
But is it really considered evolution when they are bred specifically for food and labor? If humans disappeared, it makes you wonder how many of those specialty dog breeds or farm animals would even survive without us, since we created that niche for them.
originally posted by: PhotonEffect
Why is artificial selection (breeding, farming etc), not considered to be evolution?
After all, Darwin conceived of natural selection from human breeding practices, and acknowledged that NS and artificial selection achieve basically the same thing, just that one is driven by natural forces and the other by purposeful intent. But appeals to "artificiality" only serve to obfuscate our objectivity of the matter by removing ourselves from the grand scheme of biological interactions. This to me poses a problem.
originally posted by: Phantom423
Darwin didn't delve into speciation, which is how we view evolution today.
originally posted by: PhotonEffect
originally posted by: Phantom423
Darwin didn't delve into speciation, which is how we view evolution today.
Darwin wrote On the Origin of Species.
Evolution is not just speciation.
originally posted by: PhotonEffect
a reply to: Noinden
Thanks. I'm not fixated on him.
Darwin did not invent evolution, you're right. No one did. He only came up with one way to explain causes for the diversity of life.
Lots of dancing around the question I am asking.
originally posted by: PhotonEffect
a reply to: Phantom423
Organisms that direct the evolution of other organisms for their own intents and purposes. IOW, intelligently guided evolution. Why is this not included in evolutionary theory?
originally posted by: peter vlar
a reply to: PhotonEffect
What exactly is it that leads you to believe that selective breeding/ artificial selection isn't discussed in evolutionary biology? Just a heads up... It is. It's just that most people, when discussing evolution, are referring to the mechanisms behind natural biological evolution.
originally posted by: Phantom423
originally posted by: PhotonEffect
a reply to: Phantom423
Organisms that direct the evolution of other organisms for their own intents and purposes. IOW, intelligently guided evolution. Why is this not included in evolutionary theory?
I don't know where you get this impression - "intelligently" guided evolution? Who's guiding whom?
originally posted by: PhotonEffect
originally posted by: Phantom423
originally posted by: PhotonEffect
a reply to: Phantom423
Organisms that direct the evolution of other organisms for their own intents and purposes. IOW, intelligently guided evolution. Why is this not included in evolutionary theory?
I don't know where you get this impression - "intelligently" guided evolution? Who's guiding whom?
Sure you do. I just recently asked about artificial selection, to which you replied with a remark about it being "artificial evolution" only if speciation were to occur. Well speciation does occur, in abundance, due to deliberate human intervention. This is intelligently guided evolution, like it or not.
originally posted by: Phantom423
Can you give an example of a new species which was intentionally produced through human intervention? I'm at a loss to think of one. It may well happen in the future. However, at the moment, I don't think this technology is possible.
What we see in nature is divergence within a species which eventually divides into two separate species. This has been documented in plants, insects and animals. But I can't think of a new species which was made in a lab.
originally posted by: PhotonEffect
originally posted by: Phantom423
Can you give an example of a new species which was intentionally produced through human intervention? I'm at a loss to think of one. It may well happen in the future. However, at the moment, I don't think this technology is possible.
What we see in nature is divergence within a species which eventually divides into two separate species. This has been documented in plants, insects and animals. But I can't think of a new species which was made in a lab.
No need to think anymore, when there's google at your fingertips
Laboratory synthesis of an independently reproducing vertebrate species
In all seriousness, I wasn't even referring to what can be done in the lab as far as generating a novel species or fabricating a genome from scratch. But this should also be considered.
I'm asking why artificial selection, which is intentional evolution caused by an organism, is not considered part of evolutionary theory. Humans do this on an enormous scale. I didn't think I was asking such a confusing question.
And recall there doesn't have to be speciation to call it evolution ( at least by current definitions).