“Sweeping gene survey reveals new facets of evolution”

For the planet’s 7.6 billion people, 500 million house sparrows, or 100,000 sandpipers, genetic diversity “is about the same,” Mark Stoeckle from the Rockefeller University in New York told AFP
Published findings overturn settled ideas about how evolution unfolds
Who would have suspected that a handheld genetic test used to unmask sushi bars pawning off tilapia for tuna could deliver deep insights into evolution, including how new species emerge?
And who would have thought to trawl through five million of these gene snapshots—called “DNA barcodes”—collected from 100,000 animal species by hundreds of researchers around the world and deposited in the US government-run GenBank database?
That would be Mark Stoeckle from The Rockefeller University in New York and David Thaler at the University of Basel in Switzerland, who together published findings last week sure to jostle, if not overturn, more than one settled idea about how evolution unfolds.
Read the entire article posted online May 28, 2018 at phys.org.
When these scientists published the results of their sweeping study of 5 million “DNA barcodes” from about 100,000 different animal species early in May 2018, in addition to a shocking absence of genetic diversity, the authors were stunned to conclude that about 9 out of every 10 species on Earth appear to have come into being at about the same time, apparently sometime between 100,000 and 200,000 years ago. Study co-author David Thaler said of the findings, “This conclusion is very surprising, and I fought against it as hard as I could.” One unavoidable possibility these results raise was articulated in the phys.org report, which asks, “Was there some catastrophic event 200,000 years ago that nearly wiped the slate clean?”
In part one of a two-part presentation, Thunderbolts colleague Peter Mungo Jupp begins a comprehensive and radical re-assessment of the questions: How old is the Earth? And how has life unfolded upon it?
Watch the presentation by Thunderbolts colleague Peter Mungo Jupp on Youtube. (22:35)
link submitted by Robert Petrovich









