Dog, Wolf, Jackal Genomes Shed More Light on Dog Domestication . The study also shows that dogs are more closely related to each other than wolves, regardless of geographic origin. Eurasian wolf, Canis lupus lupus. Image credit: Jan Nijendijk / CC BY- SA 3. In this study, an international team of researchers from the United States, Israel and five European countries generated the highest quality genome sequences to date from three Gray wolves (Canis lupus): one each from China, Croatia and Israel, representing three regions where dogs are believed to have originated. The scientists also produced genomes for two dog breeds: a basenji, a breed which originates in central Africa, and a dingo from Australia, both areas that have been historically isolated from modern wolf populations. In addition to the wolves and dogs, they sequenced the genome of the Golden jackal (Canis aureus) to serve as an outgroup representing earlier divergence. This image depicts wolf and dog lineages as they diverge over time. Image credit: Freedman AH et al.“Dog domestication is more complex than we originally thought. In this analysis we didn’t see clear evidence in favor of a multi- regional model, or a single origin from one of the living wolves that we sampled. It makes the field of dog domestication very intriguing going forward. Image credit: Freedman AH et al. Instead of all three dogs being closely related to one of the wolf lineages, or each dog being related to its closest geographic counterpart, they seem to have descended from an older, wolf- like ancestor common to both species. Furious German shepherd dog training. Deutscher, dog stock photo.Wolves also experienced a sharp drop in population size soon after their divergence from dogs, implying that diversity among both animals’ common ancestors was larger than represented by modern wolves. The researchers also found differences across dog breeds and wolves in the number of amylase (AMY2. B) genes that help digest starch. Recent studies have suggested that this gene was critical to domestication, allowing early dogs living near humans to adapt to an agricultural diet. But the scientists surveyed genetic data from 1. Siberian husky and dingo, did not.
They also saw evidence of this gene family in wolves, meaning that it didn’t develop exclusively in dogs after the two species diverged, and may have expanded more recently after domestication. Genome Sequencing Highlights the Dynamic Early History of Dogs. PLo. S Genetics 1. ![]() ![]() Willkommen! Finde ein Thema, das dich interessiert, und leg direkt los. ![]() ![]() Dog & Wolf Captivating. None of these are words to describe Chicago punk trio Dog & Wolf. Filler for the Vacancies, released 11 October 2015 1. The Potential Satisfaction 2.
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