Thursday, September 12, 2013

Unit 5 – Primates And Primate Evolution – Biology

Unit 5 order order Primates and Primate developing biology Lecture Notes I. Introduction a. Primates atomic subject 18 a convention of mammals that includes monkeys, apes, and humans. b. They are atypical as a group in that they take up a generalized form that is not specialized for altogether item adaptive strategy c. In addition, order Primates occupy every(prenominal) environmental niche on the planet, from the tropics to the artic. II. Primate Evolutional Trends a. Primates are distinguished by three main evolutionary trends 1) Limbs and Locomotion i. pentadactyly ii. nails instead of claws iii. prehensile hands and feet iv. ability to fight back abide posture v. retention of the clavicle 2) Dentition and provender i. generalized dental pattern intentional for varied feed ii. omnivorous subsistence pattern 3) Cranio-Neurology and Behavior i. reduction of snout and de-emphasis of olfactory senses ii. increase emphasis on imaging and st ereoscopic vision* iii. change magnitude complexity of the brain iv. increased parental investment v. increased dependency on learned expression vi. greater group cohesion vii.
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adult males permanently associated with the group *stereoscopic vision: when visual fields of each center of attention point of intersection and sensory information from each essence is relayed to both sides of the brain, allowing abstrusity perception & accurate distance idea III. Explanations for Primate Evolutionary Trends a. treelike Adaptation Hypothesis 1) The primates adaptation to an arboreal niche is chiefly responsi ble for well-nigh of the unique primate e! volutionary trends 2) structural characteristics such as dentition, diet, locomotory patterns, and limb architecture are all out-of-pocket in some measure to the adaptation of look in the trees. 3) physiological characteristics such as increased dependency on vision, stereoscopic ability, reduction of the snout and de-emphasis on olfactory senses are due to...If you want to get a replete essay, order it on our website: OrderCustomPaper.com

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