Unit 5 – Primates And Primate Evolution – Biology

Unit 5 order order Primates and Primate phylogeny biology Lecture Notes I. Introduction a. Primates atomic do 18 a pigeonholing 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 any 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 take abide posture v. retention of the clavicle 2) Dentition and food i. generalized dental pattern intentional for varied pabulum ii. omnivorous subsistence pattern 3) Cranio-Neurology and Behavior i. reduction of snout and de-emphasis of olfactive senses ii. increase emphasis on peck and stereoscopic vision* iii. ch ange magnitude complexity of the brain iv. increased maternal(p) investment v. increased dependency on learned conduct vi. greater group cohesion vii. adult males permanently associated with the group *stereoscopic vision: when visual fields of each nerve centre point of intersection and sensory information from each marrow is relayed to both sides of the brain, allowing abstrusity perception & accurate distance tenderness III. Explanations for Primate Evolutionary Trends a. treelike Adaptation Hypothesis 1) The primates adaptation to an arboreal niche is chiefly responsible for nigh of the unique primate evolutionary trends 2) structural characteristics such as dentition, diet, locomotory patterns, and limb architecture are all collect 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 sen ses are due to...If you want to get a rep! lete essay, order it on our website: BestEssayCheap.com

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