Re: Ale vs. Lager

"Wheat" <kotosho@xxxxxxxxxxxx> wrote in message
news:576dnSLrHvWc6XrZnZ2dnUVZ_oOdnZ2d@xxxxxxxxxxxxxx

Here, this should clear it up for you! g,d,r

Species
A group of organisms, minerals, or other entities formally recognized as
distinct from other groups. In biology, the species is a group of actually
or potentially interbreeding natural populations, reproductively isolated
from other similar groups such that exchange of genetic material cannot
occur (the species barrier). Most species cannot interbreed with others;
those that can, typically produce infertile offspring. This biological
concept of the species cannot be applied to fossils, or to organisms that
do not reproduce sexually. These species are defined on a comparative
morphological basis.

Thanks for the info, this does clear things up a little bit. After
re-reading the scientific thing that Joel linked to, it appears that
biologists have indeed flip-flopped in recent years -- a decade or so ago
they said that all yeasts were S. cerevisiae, and now in more recent years,
they're saying, well, the lager yeasts really are a different species. The
funny thing is, our yeastie buddies mostly reproduce asexually, but the
species line is drawn at where they are able or unable to produce fertile
offspring by sexual reproduction. It's sort of like, who cares, but then
again, if biologists are currently adamant that lagers and ales really are
different, then who am I to argue. So I stand corrected.

--
Dave
"Just a drink, a little drink, and I'll be feeling GOOooOOooOOooD!" --
Genesis, 1973-ish


.

Relevant Pages

  • Re: Natural selection and favorable traits how were they measured ?
    ... That depends on where was the mechanism responsible for species ... "Natural selection", as a mechanism, can ... given the near universality of organisms struggling ... *to* reproduce, it is more obvious to consider life and/or ...
    (talk.origins)
  • Re: Two of a kind.
    ... Why reproduce by means of 2 individuals of a species when it would be much more economical and less resource-intensive to just reproduce asexually. ... There are organisms that reproduce almost purely asexually. ... It seems to me that if a species of mammal became asexual, it could be construed as evidence for creation. ...
    (talk.origins)
  • Re: Two of a kind.
    ... Why reproduce by means of 2 individuals of a species when it would be much more economical and less resource-intensive to just reproduce asexually. ... leading to the evolution of one species into another that ultimately results in the production of a male *and* a female. ... There are organisms that reproduce almost purely asexually. ...
    (talk.origins)
  • Re: No Such Thing As "Macro" Evolution
    ... >>My other point is that there has got to be more to classifying organisms ... >>into species than the biological species concept in order to deal with ... > "biological" species concept is derivative on that. ... Biologists classify fossils into species based on ...
    (talk.origins)
  • Re: The Paradox of Speciation
    ... means every species on Earth. ... EVERY pair of species shares a common ancestor, ... Despite those variations most of us can reproduce successfully. ... populations that have been reproductively isolated for vast streches ...
    (talk.origins)