Answer: 724 Use the Ratio Test to determine whether the series is convergent or

Week 11 Notes Mammal characteristics -3 bones responsible for sound (malleus, incus, and stapes). Reptiles only have 1 ear bone -the dentary makes up the lower jaw -Majority of mammals, rely on sound and smell rather than sight. Primates tend to use sight more than sound and smell. -have hair and mammary glands Mammal Evolution -mammals evolved from synapsid reptiles -Plesiosaurs evolution of homoeothermy -was around before dinosaurs -able to maintain body temperature Thermoregulation Endotherm generates metablic heat Ectotherm uses environmental heat Homeotherm constant temperature Poikilotherm variable temperature Trends of mammals -increase in brain size -increase in muscle mass and muscle number -Nocturnal habits -metabolically expensive -