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Life continues to ignore what evolution experts say

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Evidence here:

— Hybridization We’ve already seen that cross-breeding blind cavefish from different caves can restore devolved sight in at least some offspring (because the mutations that result in loss of sight differ from group to group, and some hybrids end up with all the necessary equipment). But natural hybridization can produce such changes too. Characteristics that are not evidenced in a given generation may remain as potentials.

Ferns separated 60 million years have interbred. The wolf and dog populations of North America are so heavily hybridized that it is a challenge to make sense of them at all in the face of “all the contradictory claims.” Researchers have also identified at least three potential hybridization events (interspecific mating) in Eurasian mice. One scientist noted that other studies “may have missed evidence of hybridization because the researchers weren’t specifically looking for it.” That means we do not currently know how frequent it is. More strangely, common baker’s yeast turns out to have two different versions of its genome, thought due to a hybridization event 100 million years ago.

As a mechanism, hybridization may have developed a taint due to implausible hypotheses such as the supposed pig-chimp hybrid that, according to one theory, produced humans. But, within the bounds of the plausible, it is a means of producing long-term changes in life forms over time. More.

Hmm. Maybe the experts should just fire all the current life forms and get themselves different ones?

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2 Replies to “Life continues to ignore what evolution experts say

  1. 1
    Bob O'H says:

    It might be good when you write a post titled “Life continues to ignore what evolution experts say” if you actually showed what these evolution experts actually said. In the specific case of hybridisation, I don’t see how it contradicts evolutionary biology, indeed the reverse. Speciation is often a slow process of building up barriers to reproductive success, so it it’s slower than adaptation to the environment, then you can get morphologically distinct populations (that we might call species) that still have the potential to cross and produce offspring.

    Unfortunately, these issues are why speciation is not as simple or as well understood as News would like. But she would rather pull funding for studies of difficult stuff than try to understand it.

  2. 2
    bornagain77 says:

    OT:

    Scientists create never-before-seen form of matter – September 25, 2013
    Excerpt: Working with colleagues at the Harvard-MIT Center for Ultracold Atoms, a group led by Harvard Professor of Physics Mikhail Lukin and MIT Professor of Physics Vladan Vuletic have managed to coax photons into binding together to form molecules – a state of matter that, until recently, had been purely theoretical.,,,
    “It’s a photonic interaction that’s mediated by the atomic interaction,” Lukin said. “That makes these two photons behave like a molecule, and when they exit the medium they’re much more likely to do so together than as single photons.”,,,
    Lukin also suggested that the system might one day even be used to create complex three-dimensional structures – such as crystals – wholly out of light.
    http://phys.org/news/2013-09-s.....-seen.html

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