I do not understand how you are misconstruing what I wrote about losing the breed. The whole human race is not a breed or a variety, or even a race as the term is usually used.
No, it's a species.
I've never said the whole Kind would be lost, just the breed or variety or species or race.
See? You say that species will be lost as a result of genetic diversity. And yet our species,
Homo sapiens, comes in a range of shapes, sizes, and colors, and yet there is no sense in which our species is "lost".
Not if the mutations change the basic characteristics of the species so that it is no longer recognizable as that species.
Which would be evolution.
Again, your objection seems to be: "But if, as you say, evolution takes place, then this would result in evolution taking place!"
Well ... yes?
But when that happens the alleles for the traits for the varieties being replaced are getting reduced and can eventually be lost altogether.
Yes, that's what "fixed" means. That's exactly the scenario I'm proposing.
Yes you may get your new species, and yes that is evolution, but the only way you can get it is if the genetic underpinnings of the rejected traits are lost.
And replaced with the new traits which (by hypothesis) were produced by mutation. So there's no net loss of diversity over the whole process.
If you have an apple, and I give you an orange, and then take away your apple, have you undergone a net loss of pieces of fruit?
No, I say mutations themselves stop the processes of evolution that form new species, I certainly haven't said that mutations mean evolution will never stop, because evolution requires selection which always reduces genetic diversity. If you add diversity after you have a new species as a result of evolution/selection/reduction of genetic diversity, you simply lose your species. It's no longer the same species. You may get something else, even another species eventually, but you'll have lost the species originally selected. This isn't evolution ...
Yes it is, Faith. That is, exactly, evolution. If, for example, you start of with a population of
Australopithecus and end up with a population of
Homo sapiens, then evolution has taken place. Sure, you've lost the species you started with. But you've gained a new one which has
evolved from the old one. If this is not evolution, then what is?
Edited by Dr Adequate, : No reason given.