Re: evolution of wolves into dogs.
- From: Lorentz <drosen0000@xxxxxxxxx>
- Date: Fri, 18 May 2007 13:33:16 -0400 (EDT)
On May 16, 1:51 pm, "//// Owen \\\\\\\\" <m...@xxxxxxx> wrote:
I am not a troll. My question arises from ignorance and confusion.This is a condescending troll. However, its fun to answer trolls
In my ignorance , it all seems so simple.
and I will do so.
I wasYes. This is a specific example of evolution.
reading about a theory of how wolves evolved into dogs. It involved
thyroxine, the hormone secreted by the thyroid gland.
My confusion is this: Is the domestication of the wolf evolution at all?
Some wolves were amenable toAccording to this theory, the reason some wolves were amenable to
domestication, and we domesticated them. Other wolves we not amenable to
domestication, and we didn't domesticate them.
domestication was because of the levels of throxine. The reason some
of the wolves were not amenable to domestication was a different level
of thyroxine. The levels of thyroxine are mostly hereditary. Natural
or artificial selection favored the wolves with the level of thyroxine
that favored domestication. The way the word evolution is used these
days, either form of selection is a type of evolution.
I read a theory on dog evolution long ago. One issue was to what
degree the selection was "natural" or artificial." I think the
conclusion is that it was what Darwin called "unconscious" selection.
Although humans were involved in the selection, the humans probably
did not actually sit down and think "I am going to breed a new type of
animal." Wolves picked through human garbage.
The humans chased away the nasty wolves just for their immediate
safety. The ones that weren't chased away were "amenable to
domestication." However, there couldn't have been even a word for
domestication. Therefore, there was no effort to domesticate them. No
human even let a wolf into their home until the wolves had already
accumulated the changes leading to the correct level of thyroxine. I
am sure at some point someone probably made the decision to take one
home. But the wolf/dogs already were mellow, small and stupid due to
the level of thyroxime. The decision to actually make one into a pet
was probably an anticlimax according to this theory (which I believe
without certainty). The dog evolved from wolves before it was actually
domesticated, according to this theory.
I am not sure why you find the idea of domestication so simple.
Modern day wolves are not domesticable, although some of them are
trainable (completely different concepts). There aren't wolves that
are more domesticable than others. You couldn't choose "half-a-
domesticate" wolf. People just don't keep wild wolves into their home,
then or now. Not even little puppies. Getting from an animal that eats
you to one you leave with your kids is not something that can be done
without either an incredible long-term plan or natural selection. You
really find it simple?
Thus, if the theory is true it falls between natural and
artificial selection. I think that it is more of a natural selection
than a artificial one, since the thoughts were not of any long term
domestication. If the theory is true.
.
- References:
- evolution of wolves into dogs.
- From: //// Owen \\\\\\\\
- evolution of wolves into dogs.
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