The origin of dogs is a hot topic among biologists, who've fought over whether there's a single point of origin from wolves and when and where it (or they) happened. A new study suggests the answer is twice, independently, from populations of wolves in western Europe and in east Asia. But they interbred, so most modern dogs are descended from both western and eastern groups.
The geographic and temporal origins of dogs remain controversial. We generated genetic sequences from 59 ancient dogs and a complete (28x) genome of a late Neolithic dog (dated to ~4800 calendar years before the present) from Ireland. Our analyses revealed a deep split separating modern East Asian and Western Eurasian dogs. Surprisingly, the date of this divergence (~14,000 to 6400 years ago) occurs commensurate with, or several millennia after, the first appearance of dogs in Europe and East Asia. Additional analyses of ancient and modern mitochondrial DNA revealed a sharp discontinuity in haplotype frequencies in Europe. Combined, these results suggest that dogs may have been domesticated independently in Eastern and Western Eurasia from distinct wolf populations. East Eurasian dogs were then possibly transported to Europe with people, where they partially replaced European Paleolithic dogs.
On Saturday, Danny McDaniel was kayaking near Santa Catalina island off the southern California coast when he felt something big strike the side of his boat. It was a great white shark that Ben Frable, Marine Vertebrates Collection Manager at the Scripps Institution of Oceanography later estimated to be 17-20 feet long. How did they […]
The getaway goat’s name is ‘Big Boy.’ “He’s never done anything like that before,” his owner said when finally reunited with the goat. “I think he was drinking too much that night. I’m really sorry it happened but there wasn’t much I could do. I wasn’t there.” In an Ohio town, a teen got home […]
There are a lot of different language apps out there because nobody learns anything the same exact way – especially not something as complex as a new language. For some people, the best way is to dive in and start talking, but that’s easier said than done if you’re not around those natives you aspire […]
There’s movie merch and then there are artifacts – one-of-a-kind items for the true fans only. These 11 items definitely fall into the latter category. We’ve unearthed movie art, props and other fan touchstones from the major nerd franchises of the last 50 years. Gaze upon these Star Wars and Marvel collectibles and don’t worry. […]
No matter what kind of office you work at, there’s probably an Excel expert in it. And no wonder: Businesses are still discovering uses for one of Microsoft’s flagship software suites beyond just bare-bones spreadsheets. Make October the month you become invaluable at work by taking one of these boot camps in Excel and its […]