ANTH_121_4_2_2009[1]

ANTH_121_4_2_2009[1] - 2. Human Evolution April 2, 09 What...

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2. Human Evolution April 2, 09 What does it mean to be human? - Linnaeus’s Taxonomy -How are we classified in the taxonomy? What does it mean to evolve? -Darwin & Nat Sel. -Adaption -Genetics -Speciation ________________________________________________________________________________ Taxonomy- Carl Linnaeus - father of modern taxonomy [plants/animals] Systema Naturae -binomial Nomenclature Genus species -“God created, Linnaeus organized” Linnaean Taxonomy K ingdom, Phylum, Class, Order, Family Genus Specie “Kittens prefer chicken or French girl scouts” Biological Species Concept -Species = groups of actually or potentially interbreeding natural populations which are productively isolated  from other such groups [ mules and donkeys are distinct species ] -the only level Lennaean taxonomy that has a real world meaning, all others are arbitrarily defined for the  purpose of classification Our Taxonomy group humans with greater apes at level of family [most consistent with how we evolved] *Kingdom; Animalia - we are all animals; organisms with cells having cell membrane but lacking cell wall, multi- cellular, heterotrophic, mobile, having sense organs *Phylum; Chordata - all animals with a notochord [like a spine] and gill slits at some point in their life cycle [fish] *Subphylum; Vertebrata - all animals with bony spinal column protecting the spinal cord and a cranium [dogs, lizards,  penguin, sharks] *Class; Mammalia - mammals; vertebrates with mammary glands that in females secrete milk to nourish young, hair,  warm-blooded, bears live young,  heterodonty - have different teeths [anything that milks; do NOT lay eggs] *Order; Primates - collar bones, eyes face forward, grasping hands with fingers/nails [instead of claws], stereoscopic  vision [depth perception/ overlap from one eye to another], decreased emphasis on olfaction, relatively large and 
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complex brains. *Family; Homindae - upright posture, large brain, stereoscopic vision, flat face, hands and feet have different  specialization *Genus; Homo - bipedal, reliant on tools, s-shaped spine [strictly upright posture], loss of opposability of the big toe,  reduced projection of the face, reduces sexual dimorphism [males about 10% bigger than females; becoming more 
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This note was uploaded on 06/27/2009 for the course ANTH 121 taught by Professor Walker during the Spring '08 term at UCSB.

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ANTH_121_4_2_2009[1] - 2. Human Evolution April 2, 09 What...

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