Question: Identify sister taxa, then larger groups that share a common ancestor. Draw an phylogenetic tree showing the evolutionary relationships among these 10 species. Be sure to label novel traits where they arose. PHYLOGENTIC TREE MUST BE HAND DRAWN.
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Species
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Number of limbs
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Amniotic egg? (yes or no)
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Body covering (fur/scales/etc.)
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Number of heart chambers
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Internal or external skeleton
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American lobster
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10
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no
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shell
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1
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external
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Bald eagle
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2
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yes
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feather
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4
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internal
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Bluegill (fish)
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6
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no
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scale
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2
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internal
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Brook trout
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7
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no
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scale
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2
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internal
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Canvasback duck
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2
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yes
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feather
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4
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internal
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Green crab
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10
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no
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shell
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1
|
external
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Spotted salamander
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4
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yes
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skin
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3
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internal
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Spotted turtle
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4
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yes
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Shell/skin
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3
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both
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Wood frog
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4
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no
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skin
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3
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internal
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Black bear
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4
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no
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fur
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4
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internal
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