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Evolution: Unexpectedly elastic genomes balanced gains and losses over 100 million years, researchers say

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Genome in 3-D
Genome in 3-D/Darryl Leja, Ernesto Del Aguila III, NHGRI

From ScienceDaily:

Evolution is often thought of as a gradual remodeling of the genome, the genetic blueprints for building an organism. But in some instances it might be more appropriate to call it an overhaul. Over the past 100 million years, the human lineage has lost one-fifth of its DNA, while an even greater amount was added, report scientists at the University of Utah School of Medicine. Until now, the extent to which our genome has expanded and contracted had been underappreciated, masked by its relatively constant size over evolutionary time.

Humans aren’t the only ones with elastic genomes. A new look at a virtual zoo-full of animals, from hummingbirds to bats to elephants, suggests that many vertebrate genomes have the same accordion-like properties.

“I didn’t expect this at all,” says the study’s senior author Cédric Feschotte, Ph.D., professor of human genetics. “The dynamic nature of these genomes had remained hidden because of the remarkable balance between gain and loss.” More.

Hmmmm. It gets more remarkable all the time, doesn’t it? Almost like there was some sort of design of life…

See also: “Evolution of genetic code” article illustrates fundamental problem

and

DNA has hidden code for making new gene pieces

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7 Replies to “Evolution: Unexpectedly elastic genomes balanced gains and losses over 100 million years, researchers say

  1. 1
    bornagain77 says:

    OT:

    Drosophila Cell Division on Lattice Light Sheet Microscope
    https://vimeo.com/202222028?outro=1

  2. 2
    Pearlman says:

    Stasis not only supports ID over NDT but supports YeC-ID over Deep-time  ID.

  3. 3
    bFast says:

    Pearlman, the only problem with YeC-ID is all of the other evidence flying in from everywhere.

  4. 4
    bornagain77 says:

    OT;

    “A team of Université Laval researchers has cast into doubt a tenet of evolutionary biology according to which organisms with more than one copy of the same gene in their genome are more resilient to genetic perturbations. In an article to be published tomorrow in Science, the researchers show that this genetic redundancy can also make the genome more fragile, leaving organisms more vulnerable to the effects of harmful mutations.”
    (Researchers cast into doubt a tenet of the dominant evolutionary biology model, February 9, 2017)
    https://phys.org/news/2017-02-tenet-dominant-evolutionary-biology.html

  5. 5
    PaV says:

    What we should be listening to in this bit of science news is that “loss” seems to be almost universal. This fits in, again—as it has done time and time before—with Behe’s First Rule of Adaptation. The “increase” that offsets the “loss” so that a somewhat constant genome size is maintained can easily be due to some form of horizontal gene transfer.

    No doubt all of this represents an on-going ‘tinkering’ on the part of genomes, almost surely generated by internal mechanisms (NGE), and which presents to us a view of “evolution” in life-forms that is to some degree ‘guided’ by these internal mechanisms. It is a very different view as presented to us by population genetics.

    Further, it points in the direction of what ID discusses as “front-loading.”

    This is not healthy for evolutionists.

  6. 6
    bornagain77 says:

    (“Then a miracle occurs,,, 27 times!”)

    Repeated and Widespread Evolution of Bioluminescence in Marine Fishes – June 2016
    Abstract
    Bioluminescence is primarily a marine phenomenon with 80% of metazoan bioluminescent genera occurring in the world’s oceans. Here we show that bioluminescence has evolved repeatedly and is phylogenetically widespread across ray-finned fishes. We recover 27 independent evolutionary events of bioluminescence, all among marine fish lineages. This finding indicates that bioluminescence has evolved many more times than previously hypothesized across fishes and the tree of life. Our exploration of the macroevolutionary patterns of bioluminescent lineages indicates that the present day diversity of some inshore and deep-sea bioluminescent fish lineages that use bioluminescence for communication, feeding, and reproduction exhibit exceptional species richness given clade age. We show that exceptional species richness occurs particularly in deep-sea fishes with intrinsic bioluminescent systems and both shallow water and deep-sea lineages with luminescent systems used for communication.
    http://www.darwinthenandnow.co.....inescence/
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4898709/

    Edith Widder: Glowing life in an underwater world – video
    http://www.ted.com/talks/edith.....world.html

  7. 7
    buffalo says:

    “Hmmmm. It gets more remarkable all the time, doesn’t it? Almost like there was some sort of design of life…”

    ————
    Exactly. Life has been frontloaded.

    What is IDvolution?
    IDvolution – God “breathed” the super language of DNA into the “kinds” in the creative act.

    This accounts for the diversity of life we see. The core makeup shared by all living things have the necessary complex information built in that facilitates rapid and responsive adaptation of features and variation while being able to preserve the “kind” that they began as. Life has been created with the creativity built in ready to respond to triggering events.
    Since it has been demonstrated that all living organisms on Earth have the same core, it is virtually certain that living organisms have been thought of AT ONCE by the One and the same Creator endowed with the super language we know as DNA that switched on the formation of the various kinds, the cattle, the swimming creatures, the flying creatures, etc.. in a pristine harmonious state and superb adaptability and responsiveness to their environment for the purpose of populating the earth that became subject to the ravages of corruption by the sin of one man (deleterious mutations).
    IDvolution considers the latest science and is consistent with the continuous teaching of the Church.

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