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BIOMOLECULES AND CELLS > Animal Taxa II > Flashcards

Animal Taxa II Flashcards

1
Q

How do we group animals?

A

Phyolgeny

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2
Q

What is phylogeny

A

Evolutionary relationships between individuals/groups of organisms

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3
Q

How are phylogenic relationships determined?

A
  • fossil record
  • morphology
  • embryonic development
  • genome analysis
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4
Q

Paraphyletic group

A

Includes common ancestor but not all its descendants

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5
Q

Polyphyletic group

A

Does not include common ancestor

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6
Q

Monophyletic group

A

Includes common ancestor and all its descendants - clade

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7
Q

What are the key features of a mammal?

A
  • fur
  • endothermic
  • milk
  • 3 inner-ear bones
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8
Q

Key features of reptiles

A
  • scales
  • ectotherms
  • most lay eggs
  • no aquatic larval stage
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9
Q

What are the 3 mammalian sub-classes?

A
  • prototheria - platypus/echidna
  • metatheria - marsupials
  • eutheria - placental animals
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BIOMOLECULES AND CELLS (32 decks)

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