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Lecture 6 ANIMAL EVOLUTION: THE VERTEBRATES

Lecture 6 ANIMAL EVOLUTION: THE VERTEBRATES. The Marsupials…. Placental Mammals :. Have placenta the most dominant group of mammals have longer period of pregnancy young complete their embryonic development within the uterus, joined to the mother by placenta.

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Lecture 6 ANIMAL EVOLUTION: THE VERTEBRATES

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  1. Lecture 6ANIMAL EVOLUTION: THE VERTEBRATES

  2. The Marsupials…

  3. Placental Mammals: • Have placenta • the most dominant group of mammals • have longer period of pregnancy • young complete their embryonic development within the uterus, joined to the mother by placenta. • Marsupials and eutherians are closely related than either is to monotremes; may have diverged from a common ancestor.

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