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Author | Topic: Define "Kind" | |||||||||||||||||||||||||||
NosyNed Member Posts: 9004 From: Canada Joined: |
I've argued it here many times, don't really want to get deeply into it again. It's that the mechanisms of evolution that are described in population genetics tend generally to the reduction of genetic potential. When natural selection or bottleneck or any other event splits one population from another, either by geographic isolation or by the death of one part of the population, the new population(s) exhibit smaller genetic diversity than the parent population. If this trend continues with more population splits then ultimately you can get to a very much reduced genetic potential even in something that is clearly a new highly adapted "species." Thus the very process of speciation is bought at the cost of a loss of genetic diversity. The only thing that counters this overall trend is mutation, and it has to be frequent enough and beneficial enough to counter a LOT of reduction. I don't know if experiments are the way to tackle this or thinking through known facts about these processes by somebody who has lots of experience with them, which I don't. Since this is all based on genetics your distinction between other primates and humans goes away. The "kind" must be based on that too and so chimps and humans become one kind.
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Faith  Suspended Member (Idle past 1472 days) Posts: 35298 From: Nevada, USA Joined: |
There are some similarities we could catalog between all living things. I find more similarities between bears and raccoons than I do between humans and apes.
This message has been edited by Faith, 02-21-2006 12:53 PM
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NosyNed Member Posts: 9004 From: Canada Joined: |
I find more similarities between bears and raccoons than I do between humans and apes. But other than superficial appearance you know nothing at all about bears, racoons, humans or other apes so there is no way for you to arrive at any well-founded conclusion. It would be, however, interesting for you to list the similarities you find on both sides.
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Faith  Suspended Member (Idle past 1472 days) Posts: 35298 From: Nevada, USA Joined: |
Since this is all based on genetics your distinction between other primates and humans goes away. The "kind" must be based on that too and so chimps and humans become one kind. I'm talking about the limits to diversity that naturally occur with selection processes, not what the genome looks like, so you are comparing apples and oranges. I do have to think that the genome will yield a clue to the Kinds eventually, but the similarities so touted by evos between apes and men are no more than what one would expect from basic design similarities of the basic physical structure, while the differences between apes and humans in body and behavior are incredibly striking. A raccoon ACTS LIKE a bear and has the basic BODY BUILD of a bear. The similarities between apes and humans are mostly structural, while they neither look like nor act like humans beyond the most strained analogies.
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Faith  Suspended Member (Idle past 1472 days) Posts: 35298 From: Nevada, USA Joined: |
It would be, however, interesting for you to list the similarities you find on both sides. Message 32 and Message 49 I think behavior is probably a strong indicator of Kindship.* So I class animals as dogs that act like dogs, same with cats, same with bear and raccoon, etc. Certainly similarities of build count in the mix too.
*And I mean a CLUSTER of behaviors they have in common, not just one or two as that many can be shared across all kinds of boundaries. This message has been edited by Faith, 02-21-2006 01:09 PM
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sidelined Member (Idle past 5936 days) Posts: 3435 From: Edmonton Alberta Canada Joined: |
Faith
The fat lumbering body, the general shape of the face, the "hands" that wash its food, its way of standing on its hind legs at times. And yet you can see no corresponding likeness between primates and humans?
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Faith  Suspended Member (Idle past 1472 days) Posts: 35298 From: Nevada, USA Joined: |
And yet you can see no corresponding likeness between primates and humans? Only most superficially {abe; Actually not even superficially, more like "theoretically" as in behavior and body build the comparisons are purely analogous, not at all definitive}, nowhere near such a definitive degree. This message has been edited by Faith, 02-21-2006 01:11 PM
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nator Member (Idle past 2198 days) Posts: 12961 From: Ann Arbor Joined: |
quote: Actually, it's much more than "basic physical structure", Faith. Humans and apes share a broken gene for producing vitamin C, and that is about as far from "basic physical structure" one can genetically get.
quote: Our behavior is not that different. Chimps and a few other apes have the intelligence and similar behavior to a 6 year old human, and can be taught hundreds of sign language words. And I still don't get how you think that apes and humans are "strikingly" different in appearence. Why were blacks called "jungle monkeys" if people didn't think they looked "strikingly" like primates?
quote: Raccons are quite a lot smarter than bears, IIRC. And aren't raccoons noctournal, whereas bears move about in the daytime?
quote: Except the paws of the two are totally different, and raccoons have long tails and bears do not.
quote: Actually, that is not true, as I gave an example above. Why do we do human medical research, including aids research, on chimps and other primates, if we were not incredibly similar to them in many, many ways? Do you deny that genes determine the nature of ALL of the structure of an organism's body?
quote: They have language, Faith, and they teach tool use and culture to their offspring. We can teach them a little of our language. This message has been edited by schrafinator, 02-21-2006 01:14 PM
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Faith  Suspended Member (Idle past 1472 days) Posts: 35298 From: Nevada, USA Joined: |
I'm not impressed. Such similarities are nothing more than rough analogies.
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nator Member (Idle past 2198 days) Posts: 12961 From: Ann Arbor Joined: |
Humans and apes share a broken gene for vitamin c production.
Do you agree that this is more than "basic structural similarity"? We use chimps and other primates to do human medical research, including aids research. It is very expensive, so if it did not result in fruitful results, it wouldn't be done. Do you agree that this indicates a great similarity in many systems between humans and other primates?
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nator Member (Idle past 2198 days) Posts: 12961 From: Ann Arbor Joined: |
Do you agree, Faith, that within the Creationist model, shared genes and using genetics to determine relatedness at any level are rejected?
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DBlevins Member (Idle past 3804 days) Posts: 652 From: Puyallup, WA. Joined: |
I am curious what you would consider an "intuitive" boundary then?
Could you maybe expand this idea a bit? I am assuming, though it is your own idea, that this could help clarify or determine what you consider a 'kind' to be. Ideas: Diet (such as between Pandas and Bears)Ecology (such as between otters and sea-lions or minks) Behavior (such as between wolves and badgers) morphology (such as between snake and iguana) Genetic analysis (such as between chimps and humans) If you could provide us with some sense of how you determine 'kinds' even in your own view, it would help to narrow the debate.
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DBlevins Member (Idle past 3804 days) Posts: 652 From: Puyallup, WA. Joined: |
That's my own idea of how it will work out, but I suppose it could instead be defined genetically, through the study of the genome. Genetic analysis has shown bears to be related to wolves (dogs) with the bears closest relative being the Sea-lions and walruses. Genetic analysis has also shown Humans to share roughly 98.5% of our genes with Chimpanzees.
But it doesn't define them. That's for science to do. Yet you continue to reject science. If the bible doesn't define 'kinds' and you reject science's answer then where does that leave you or anyone else? How can you so surreptitiously abdicate for the role of science on one hand and blatantly argue for the bibles supremecy on the other? I know you feel that the bible is supreme in all things and above science, but how can you not see the contradiction you're proposing above? If the bible doesn't hold the answer then there can not be any honest search for answers if we reject anything that appears to contradict the bible. Are you interested in an honest search or just pretending? The study of the genome practically screams out our relatedness to the apes. In fact, we share more in common (genetically) with the chimps than some birds species do within their own species. This message has been edited by DBlevins, 02-21-2006 02:17 PM
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NosyNed Member Posts: 9004 From: Canada Joined: |
In fact, we share more in common (genetically) with the chimps than some birds species do within their own species. What? Do you have something to support this?
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sidelined Member (Idle past 5936 days) Posts: 3435 From: Edmonton Alberta Canada Joined: |
Faith
It was not any more so with the bear and racoon though. And genetically the primates share a greater amount than do bears and racoons. Indeed there are all sorts of counterintuitive connections in the animal world revealed through genetics
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