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Paleolithic dog. Polychrome tracing made by the archaeologist Henri Breuil from the cave painting of a wolf-like canid discovered in the Font-de-Gaume cave, Dordogne, France dated to 17,000 years ago. Purported remains of " Paleolithic dogs " have been reported from several European archaeological sites dating to over 30,000 years ago.
The carrot ( Daucus carota subsp. sativus) is a root vegetable, typically orange in color, though heirloom variants including purple, black, red, white, and yellow cultivars exist, [ 2][ 3][ 4] all of which are domesticated forms of the wild carrot, Daucus carota, native to Europe and Southwestern Asia. The plant probably originated in Iran and ...
Domestication of the dog. The dog diverged from a now-extinct population of wolves 27,000–40,000 years ago immediately before the Last Glacial Maximum, [ 1] [ 2] when much of the mammoth steppe was cold and dry. The domestication of the dog was the process which led to the domestic dog. This included the dog's genetic divergence from the wolf ...
Also called the domestic dog, it was domesticated from an extinct population of Pleistocene wolves over 14,000 years ago. The dog was the first species to be domesticated by humans. Experts estimate that hunter-gatherers domesticated dogs more than 15,000 years ago, which was before the development of agriculture.
1. Dogs Had Lots of Jobs. When dogs were first domesticated by prehistoric man, they were originally used as hunting animals, then later as herding dogs and pack animals as civilization developed ...
Xerophthalmia. In xerophthalmia, Bitot's spots occur after conjunctival xerosis. Xerophthalmia (from Ancient Greek xērós ( ξηρός) meaning "dry" and ophthalmos ( οφθαλμός) meaning "eye") is a medical condition in which the eye fails to produce tears. It may be caused by vitamin A deficiency, [ 1] which is sometimes used to ...
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The domestication of vertebrates is the mutual relationship between vertebrate animals including birds and mammals, and the humans who have influence on their care and reproduction. [ 1] Charles Darwin recognized a small number of traits that made domesticated species different from their wild ancestors. He was also the first to recognize the ...