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What is a dichtomous key and what are the characteristics of a good one?
Wiki User
∙ 13y ago
a dichotomous key is used to separate species based on a trait, a good one will be organized and separate all of the species into their own groups based on the trait.
ex: used to separate: kangaroo, shark, lizard, cow, alligator
1.has lungs-go to 2
has gills-shark
2. has four legs-go to 3
has two legs-kangaroo
3.is a mammal-cow
is a reptile-go to 7
4. lives predominantly in water- alligator
lives predominantly on land- lizard
Wiki User
∙ 13y ago
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