On Sep 4, 2005, at 8:26 AM, Leonard Matusik wrote:
Fri, 2 Sep 2005 12:30:01 -0700 Warren Ockrassa wrote:
On Sep 2, 2005, at 6:03 AM, Leonard Matusik wrote:
Thu, 1 Sep 2005 13:02:44 -0200 Alberto Monteiro wrote:
Leonard Matusik wrote:
PS: with all the reproductive isolation we've foisted upon dogs
(not
to mention rats!) Why haven't we created any new species?
We have. Dogs _are_ an artificial creation of Humanity
Alberto Monteiro
Sorry, (pending opinions of a better biologist than me) I disagree.
What you probably haven't considered is that speciation in complex
animals or plants is a very, very slow process. It won't happen in a
single lifetime, and it won't happen in recorded human generations'
history either. (We've only been keeping track for about 40K years,
after all.)
.......... There are nice, solid fossil records showing a
transitional-form track from terrestrial predator to modern whale, for
instance; and molecular biology is, every day, uncovering the
breadcrumb trails in DNA that show clearly what's related to what …
and
often, by how far removed.............
....... I'm not able to figure out what
the hell these "toenails" are for!
....More about my toenails in future threads......ljm
Perhaps you should look up the term "vestigial" in the dictionary
sometime. It'll also explain male nipples.
....and male nipples need no explaination for those who properly
appreciate them.
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
So there you have it! Two better biologists than me agree that dogs
are NOT a new species....
Hardly. I claim no credentials. I just read a lot. This seems to be
sufficient to piss off Dan with my level of misinformation in re
quantum mechanics, so it's conceivable that someone else in molec bio
might want to flog me mightily as well.
However, I thought there were some fundamental missings that could be
answered.
Re evolution:
Now the question I and other beings of goodwill might ask: How did
this AMAZING phenomena come about?
There isn't one cause. Genetic drift, environmental stress, species
isolation and in/interbreeding all come into play here.
--
Warren Ockrassa, Publisher/Editor, nightwares Books
http://books.nightwares.com/
Current work in progress "The Seven-Year Mirror"
http://www.nightwares.com/books/ockrassa/Flat_Out.pdf
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