Re: Do you actually BELIEVE THAT?

On Feb 4, 5:47 pm, "[M]adman" <g...@xxxxxxxxxx> wrote:
Devils Advocaat wrote:
snip



The movement of humans across the planet is not an example of
reproductive isolation, nor is it even an example of geographic
isolation, and that is simply because human beings don't become
isolated from each other simply because one group has left the
location of the other for pastures new, others may follow the first
group and others may return to their place of origin.

It it works for the birds, then it works for humans or it does not work at
all

You may have noticed, that many species of birds have wings, and can
fly. Humans only developed the technology to fly within the last
110 years.






Since reproductive isolation is not reliable in separating one
species into another, it should not be used as a benchmark example
of divergence and separation of one into two different species.

Reproductive isolation means that the two populations that were
formerly one species are no longer able to interbreed, and so is a
fairly good benchmark of speciation.

Yeah. And we know that can happen.

Correct, as it's been observed.


BUT it is not an excuse for evolution on a planatary wide scale for the
origins of species.

Why not, exactly? There's nothing to prevent it, and there's
plenty of evidence that it happened.

snip



you can't

You and others have been shown numerous examples of speciation that
have been observed in nature and in the laboratory. Wny do you
continue to ignore it?

Who ignores it?


you do, as you did above.


I know speciation happens.

Then you should have no problem with the concept of speciation
producing the diversity of life.......


It does not happen often enough to be a large reason for divergence.

Where do you get that idea? How often is "often enough"?


Why deny it?

Because there isn't any reason to accept your unsupported assertion on
this matter.



So how about you present your viable alternative and explain why this
alternative has not been able to refute the theory of evolution.

These have been presented ALL over the internet

Weren't you just complaining that people weren't falling all over
themselves to repeat giving you examples of how sexual reproduction
originated? Now you are refusing to provide details.


DJT

.

Relevant Pages

  • Re: On the Origin of a Species
    ... Reproductive isolating mechanisms are what *maintain* specieshood, ... The fastest way to generate a new sexual species is to evolve new ... evolves by genetic drift and natural selection, reproductive isolation ...
    (talk.origins)
  • Re: No Such Thing As "Macro" Evolution
    ... >>enough genetic change to be classified as a new species. ... >>isolation is a mere side effect of geographic isolation, ... >>will evolve away from each other anyway, so reproductive isolation is ...
    (talk.origins)
  • Re: If you were to design a language, how many vowels and consonants would you use?
    ... The speakers of two different _languages_, however, to the extent that they're not mutually intelligible (a concept nearly as difficult to quantify in many cases as is reproductive isolation in the wild, of course), have sufficient difficulty communicating using them for us to speak of them being "communicatively isolated", to at least the same extent as wolves and coyotes are reproductively isolated. ... Conversely, a fair degree of isolation, geographical or behavoural, is necessary for one species/language to split into two. ... In the same ideal world where members of different biological species never interbreed, ...
    (sci.lang)
  • Re: No Such Thing As "Macro" Evolution
    ... >>>enough genetic change to be classified as a new species. ... >>>isolation is a mere side effect of geographic isolation, ... Even if there is some gene migration between the ... >>>will evolve away from each other anyway, so reproductive isolation is ...
    (talk.origins)
  • Re: Phylogenetic question for John Harshman
    ... Homo sapiens is *species*. ... clearly you must think that skin color is a useful trait in ... Like skin color in humans, ... partial reproductive isolation unrelated to geographic opportunity. ...
    (talk.origins)