ADAPTING TO THE CHANGING ENVIRONMENT: Bipedalism Bipedalism- the condition of being two-footed or of using two feet for standing and walking. The hominoid apes flourished at the very beginning of the Miocene epoch‚ when lush tropical rain forests were the predominant habitat. In the Opinion of many Anthropologists‚ bipedalism was adaptive for life amid the tall grasses of the savannas. Baboons and some other old World monkeys also live in savanna- type environments‚ yet although they can
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Item 4: stone tools developed Who: hominines What: tools made of bones When: 2.6 m. y. a Where: east Africa * Scavenger rather than hunters Item 5: Handy man appears Who: Homo habilis aka handy man What: increase cranial‚ well developed incisor and canine teeth‚ made tools of bone‚ wood and plants When: 1.9 m. y. a Where: south and east Africa Item 8: H. sapiens emerges Who: Homo sapiens What: modern human (ancestors of H. heidelbergensis) When: 500‚000 y. a Where: Africa/neondetal(Europe)
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supernumerary teeth is excess of the 32 normal permanent teeth‚ macrodontia is large teeth‚ microdontiais small teeth‚ dens in dente is tooth within the tooth. Variation in form may include extra‚ missing‚ or fused cusps or anomalies of roots. Hutchinson’s incisors are a variety of peg shaped teeth that are usually associated with maternal syphilis. Fusion is the joining together of the dentin and the enamel of two or more separate developing teeth. Germination is an attempt by
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The Maasai children go through things as they grow up that symbolize their rites of passage. At four years old‚ the Maasai children go through getting their lower incisors removed with a knife. The Maasai boys show their strength by putting hot coal on their arms and legs. Once they are older the children will get tattoos that are life small cuts on their body. Ear piercing by hot iron is done on every gender. Once healed the lobe is stretched further and further. This is believed to be the bigger
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Name : _____Ashley Vernet_______ Chapter 17: Life on Earth Activity designed by Kathleen Rudolph Taxa to explore – Elephants!! 1. Review terms (write definitions for these terms) Extant Species‚ families‚ or groups still in existence Extinct Species‚ families‚ or groups no longer in existence‚ end or died out Genotype Genetic make-up of an organism Phenotype Physical attributes of an organism‚ observable or measurable traits Synapomorphy Shared characteristic that are inherited
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Evolution of Sciuridae Squirrels have various adaptations that have helped them through generations to become the successful organism they are today. Squirrels have adaptations that can help them in many ways for various reasons. One of these adaptations is the anatomy of their hind legs‚ and with this adaptation they are able to rotate their hind feet which allows them to go down a tree head first. Over time this species has also developed a high sense of smell‚ and during the winter time this
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personal and family histories. Vital signs were normal in her physical examination. She was hospitalised for further treatment. Upper endoscopy revealed an oesophageal ulcer‚ whitish in colour‚ of size of about 1.5cm x 1.0cm at about 21cm from the incisors. Mucosal
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(top to bottom): clown‚ neck‚ root; Right side (top to bottom): enamel‚ dentin‚ pulp cavity‚ gum‚ periodontal ligament‚ bone‚ cementum‚ rooteaneal 10. 1) C‚ 2) B‚ 3) E‚ 4) F‚ 5) J‚ 6) P‚ 7) G‚ 8) J‚ 9) A 11. 20; 32 12. Upper‚ lower‚ 2 incisors‚ 1 canine‚ 2 premolars‚ 3 molars 2‚1‚0‚2/2‚1‚0‚2 x 2 = 32 13. Third molar‚ far back 14. 1) A‚ 2) F‚ 3) E‚ 4) D‚ 5) B‚ 6) C 15. Sublingual salivary gland 16. Stores bile 17. Bile duct‚ portal venule‚ poral arteriole 18. Inside
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have chambered stomachs similar to those of cattle and sheep They regurgitate the vegetation they have eaten‚ chew it as cud ‚ and then swallow it again for final digestion. Because of its grazing‚ kangaroos have developed specialised teeth. Its incisors are able to crop grass close to the ground‚ and its molars chop and grind the grass. For produce a new bay they need to choose correct days because during a dry period‚ males will not produce sperm‚ and females will only conceive if there has been
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help break down the cellulose found in grass. Caecum hosts a number of bacteria which helps the enzymes breakdown cellulose. microbial fermentation in large intestine hindgut fermenters Specialisation / adaptation They have no canines or incisors in their upper jaw since they don’t need to tear or rip grass flat molars for grinding grass Larger more prominent canines for tearing flesh The teeth are reduced greatly apart from the two front teeth in the lower jaw. This suits their diet
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