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what are two characteristics that are primitive for mammals but derived for vertebrates? (hint: these would be features that all mammals share, but that other vertebrates do not possess.)

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There are two traits that are derived from vertebrates yet are primal for mammals are :

  1. (Vertebrate groups are: fish, amphibians, reptiles, birds, and mammals.)
  2. Hair, mammary glands, live birth, homeothermy (warm-blooded)

What do vertebrates and mammals have in common?

Vertebrates, which include all fish, amphibians, reptiles, birds, and mammals, are animals with backbones. A backbone is composed of numerous tiny bones called vertebrae. Backbones enclose and safeguard the spinal cord, a bundle of nerves that transmits data to and from the brain.

Therefore, Mammals are different from other vertebrate animals in that their young are fed with milk produced by special mammary glands in the mother.

Learn more about Mammals from the given link.

https://brainly.com/question/11363616

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