(10-2-06) - -viviparous live birth-nurse young mammary...

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Cont’d... Homologous Traits - similar structure - different function o whale flipper o human hand o bird wing Analogous Traits - different structure - similar function o bat wing o butterfly wing Convergence - the evolution of similar traits in two distantly related animals, such as similar streamlined body form for swimming in dolphins and sharks Mammals - hair - homeothermic- warm blooded (control body temperature)
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Unformatted text preview: -viviparous- live birth-nurse young- mammary glands-breathes air Monotremes-single genital opening o cloaca-lays leathery eggs-nurse young Marsupials-babies born very immature-held in a pouch instead of a womb-babies called Joeys Placental Mammals-placenta-longer gestation-young born more developed-greater protection...
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  • Fall '03
  • staff
  • mammary glands breathes, leathery eggs nurse, distantly related animals, similar streamlined body, viviparous- live birth

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