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Q Article Assignment #1 (35 points) When did hominins lose their body hair? Questions: 1. What is the purpose of hair in animals? Describe several examples. (5 points) 2. Do humans truly have no hair at all? Describe the type of hair we have, according to the articles. (5 points) 3. When specifically does Nina Jablonski hypothesize that hominins lost their hair and what is the evidence for this timing? (5 points) 4. The two articles discuss several different hypotheses for why humans lost their hair. Please provide a summary of each hypothesis in your own words, along with a brief evaluation of each hypothesis (the Pagel and Bodmer article has brief descriptions of three, the Jablonski article is considerably longer but only one hypothesis—simply cover the main elements). (20 points)

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Ans: Hair is an external protective layer on our body. This is a defining character of mammals. The hair follicle are present on the dermis, with the capability to regrow Also stimulates regrowth of skin followed by a wound. Hair mainly act as insulator in animals. The most important function severed by hair is insulation in cold environment. Hair also helps to camouflage or to attract females during breeding season. In some animals hair specialized as vibrissae helping them to sense. In porcupine hair has been modified as quills that helps them in defense.