That may be, but my statement still stands. He does not understandDNA.
And what is your evidence for this?
I don't think I used "central dogma." So I hve no idea wht it has to do wtih natural selecdtion.
That was Smidlee. His name was on the quote I replied to. I know you aren't very good at paying attention, but please, at least
try.
No. I mean natural selecdtion is not a mechanims for evolution.
... at this point I still wasn't talking to you.
First I beleive "kind" and "species" are the same. If thye can mate and producue offspring, they are the same whatever you want to call ie. If they can't they are not the same.
So, my claim stands. New kinds have been observed to form.
Refer to the previous post for two concrete examples. I even bolded the bits that say the new organisms can't breed with the old ones. I can't make it any clearer than that. ("Not interfertile" means
they can't breed together and produce offspring. They are different species. Get it yet?)
(Oh, and as for human tinkering? Nope. Hybrids of closely related plant species are very common in nature, for example, so the conditions for the kind of speciation in the TalkOrigins example are all over the place. In many cases, there is genetic evidence that wild plant species have been produced through hybridisation and then reproductive isolation of the hybrid from its parents. However, this process is much easier to observe in the lab than in the wild - hence "observed instances" are likely to involve human meddling. The TalkOrigins list does include some of the wild examples, too. Same goes for speciation by isolation.)
It has not . It is ALWAYS been statements like you just said---new kinds have mostly been produced in observable time.
I didn't say "mostly". I said "most definitely". It was right in front of you when you quoted it.
Where is the biological HOW?
What do you mean by "how"?
One more thing. Give me the definition of speciation and explain, biologically of course, how it is a mechanism for evolution.
Speciation is not a mechanism of evolution, it is an
outcome of evolution. When you've got that into you head, we can try again with explanations.
If all life forms we have today, have DNA, what are the chances the dirst one did not also have it?
Pretty large, actually. The first life form would have had to reproduce without the complex protein machinery that modern cells use to copy their DNA and divide. DNA is relatively stable and likes being wound up in a double helix, which is pretty much the opposite of what you need in a self-replicating molecule.
So what other "how" is there? What, exactly, are you looking for by way of an answer to your "how" question?
This.
It seems amazing to me that science with all of its knoweldge has not settled on a definition of "species."
Science is not a body of knowledge. It's a way of finding things out. One of the things we've found out is that "species" is a very hard thing to define.
I dont know wher you got that idea.
Probably from
this post:
frogman2x said:
First of all you have no real evicence that natural selelction is a fact. The kids don't get to select what traits they will get.
I think just the opposite.
You change your mind rather quickly.
Someone said the offspring chooses the chracteristic.
Can't remember anyone other than you saying that.
At least that is how I understood their statement. That is completely wrong.
Then you misunderstood them. Indeed, the idea that offspring get to select their traits is completely wrong. Natural selection doesn't mean that.