Intelligent Design speciation

Speciation: A bread yeast and a yeast that causes infections turn out to be the same “species”

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A collage of five fungi (clockwise from top-left): a mushroom with a flat, red top with white-spots, and a white stem growing on the ground; a red cup-shaped fungus growing on wood; a stack of green and white moldy bread slices on a plate; a microscopic, spherical grey semitransparent cell, with a smaller spherical cell beside it; a microscopic view of an elongated cellular structure shaped like a microphone, attached to the larger end is a number of smaller roughly circular elements that collectively form a mass around it
examples of fungi/Borg Queen (CC)

From Sukanya Charuchandra at The Scientist:

Two species of yeast, one of which is used in the biotechnology and food industries to make bioethanol and sourdough bread, while the other causes yeast infections, have been found to be one and the same, according to research published in PLOS Pathogens today (July 19). And, the researchers report, fungi from both settings are similarly resistant to antifungal drugs.

The differences in the appearance of the sexual and asexual forms of the species and the underdeveloped nature of molecular methods were likely responsible for the varying names of the same organism. “It’s too common in fungi,” says Antonis Rokas, a comparative fungal genomics expert at Vanderbilt University who was not involved in this study. However, things are changing, with greater efforts being made “to use as many lines of evidence as we can” when identifying a fungal species. More.

The concept of a “species,” as in On the Origin of Species, may well be in itself a dated idea, especially where fast-reproducing unicellular life forms are concerned. A measure that capture fluidity is needed.

See also: Study: Species are “compact clusters in the vastness of empty sequence space.”

Monkeys more closely related to sister species than same species in different locations?

Endangered giant Chinese salamander is at least five different “species”

and

Nothing says “Darwin snob” like indifference to the mess that the entire concept of speciation is in.

2 Replies to “Speciation: A bread yeast and a yeast that causes infections turn out to be the same “species”

  1. 1
    Fasteddious says:

    If Darwinism were true then there would be no such thing as a well-defined “species”. Rather, every population of living things would be continually in flux, on the way to change into something else. Every living thing would be a “missing link” between something different older and something else younger. Of course, that is not what is seen in the fossil record. Punctuated equilibrium attempts to “explain” this state of affairs, but is more a description than an explanation as neither the equilibrium (stasis) nor the punctuations (i.e. the “saltations” that Darwin said cannot occur) is explained.

  2. 2
    Nonlin.org says:

    Fasteddious @1

    You’re absolutely correct! And in fact, the whole gradualism concept fails in biology:
    http://nonlin.org/gradualism/

    5. We classify organisms into distinct groups with little if any overlap and with significant homogeneity within the group. If Gradualism were the norm, all living animals would fill a continuous spectrum which would make their classification in various taxa completely arbitrary. Were gradualism true in time – call this vertical gradualism, then gradualism over the current living – horizontal gradualism – should also be the norm. Instead, we observe that even unicellular organisms with huge populations and short-lived generations do not occupy a biological continuum. Plant diversity over the altitude & latitude continuum is a good example of Discontinuity in Nature: as conditions change, we see a changing mix of distinct species, rather than hybrid species as would be expected if Gradualism were true. Animal territoriality is also an example of discrete successful designs dominating certain ranges and mixing with each other at range boundaries without significantly changing their characteristics.
    6. What about Speciation and Hybridization? And what about the Fossil Record? A certain flexibility appears built into each biological design – more in some than in others. What we call Speciation and Hybridization may in fact be no more than adaptations within these flexibility ranges. Without confirming experiments on living organisms, it is impossible to determine whether the Fossil Record shows Gradualism or instead predisposition to Gradualism prompts an incorrect interpretation of the Fossil Record.

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