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Update Bio Notes 1/26

by: Rocket

Update Bio Notes 1/26 BIO 1144

Marketplace > Mississippi State University > BIO 1144 > Update Bio Notes 1 26
GPA 4.0

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About this Document

Sorry guys the last upload seemed to be blank here's the updated notes!
Thomas Holder
Study Guide
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This 3 page Study Guide was uploaded by Rocket on Tuesday January 26, 2016. The Study Guide belongs to BIO 1144 at Mississippi State University taught by Thomas Holder in Spring 2016. Since its upload, it has received 60 views.


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Date Created: 01/26/16
Bio II Notes Thomas Holder  1/26    ❖ Class Mammalia  ­approx. 8,000 species  +Exhibit traits of a Reptilian Ancestor  ­ Most likely something with 4 legs (tetrapod)  ­ Most complex, highly specialized most advanced group    +Size Range  ­ 1.5g Bat →  100,000 kg Whale    +Mammals that are similarly­like  ­ Fish­like  ­ Bird­like  ­ Reptile­like (only 3 species of egg  layers)    +Diagnostic Traits  ­ Thick Integument  ­ Hair, both needed for insulation→ endothermic  ­ More sensory receptors in skin in mammals than other groups  ­ Mammary Glands­ secrete milk for young  +Teeth  ­ Heterodont dentition​ ­ condition of having different types of teeth,  incisors/canines/premolars/molar  ­ Thecodont dentition​ ­ condition where long rooted teeth are               embedded in sockets of the jawbone  ­ Diphyodont dentition​ ­ condition of having 2 sets of teeth in  lifetime  ­ ­Dentary​­ large single bone in lower jaw, broad side for  tissue attachment  +Biggest Enhancement  ­ Increased skull size and regions   ­ In humans: Brain : Spinal Chord ratio is 55:1  ­ More complex and specialized  +Ear  ­ Pinna​: flap of cartilage/loose connective tissue to funnel sound waves to outer ear  ­ 3 small bones in middle Ear: ​ Ossicles ​(incus, malleus, and stapes)  ­ +Reproduction  ­ Viviparous​ : greatest extent of live bearing than in any other  groups  ­ All but 3 species have placenta connections from mother to  young      ★ Order Primates  +​Special Traits  ­ Grasping digits on all 4 limbs  ­ Flat faced, instead of muzzle  ­ Nails rather than claws  ­ Binocular Vision  ­ Sense of Vision outpaces Smell  +Behaviors/Sensories   ­ Complex Learning Behaviors  ­ Well developed established learning patterns  ­ Enhanced sense of touch, especially hairs  ­ Enhanced parental investment of offspring  ­ Major increase of ratio of brain to body size    Taxonomy of Man    Kingdom Animalia      Phylum Chordata          Subphylum vertebrae             Class mammalia                Order primates        Suborder Anthropoidea            Superfamily Hominoidea                          Family Hominidae                            Subfamily Homininae                               Tribe Hominini                                   Genus Homo                                       Species Homo sapiens  “wise humans”    FIGURE 32.3   33.8  END OF MATERIAL FOR EXAM NUMBER 1       


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