A secondary school revision resource for AQA GCSE Chemistry about polymers and ethanol - including applications and disposal.

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DNA Testing Suggests Dogs Needed No Convincing to Befriend Humans. Dogs have loved us for thousands of years, despite humanity’s many flaws and foibles.

New research suggests dogs were domesticated from wolves just once—that’s all it might have taken for puppers and people to form an everlasting alliance. Adobe Soundbooth Free Download Portable Firefox. The study, which was published online yesterday in Nature Communications, analyzed the genomes of two ancient German doggos—one 7,0.

The researchers compared their dog DNA data to the genome of a 4,8. Ireland that other scientists had studied in 2. In that study, published last year in Science, researchers put forth a “dual origin” idea that dogs were domesticated from wolves on two separate occasions, in Europe and Asia. But in this recent study, researchers wrote their ancient doggos “predominantly share.

Anyone who owns a cat can tell you that felines were definitely domesticated long afterward. While this new study won’t end the argument over how many times dogs were domesticated, it does offer a compelling, simple solution. Humans and wolves have likely lived in the same region for maybe 4. So if the process of domestication only occurred once, this tells us it was likely very hard to do.”Humanity is constantly evolving, and has reinvented and embarrassed itself so many ways over the course of thousands of years. But in this ever- shifting nebula of chaos we call life, at least one thing remains true: the dogs are good.