8 How to make a Taxonomic Key Step 1: Choose a group of

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How to make a Taxonomic Key
Step 1:
mongoose
humuhumunukunukuapuaa
Choose a group of
monk seal
8 animals to classify.
mahi-mahi
nene
amakihi
uhu
pig
Step 2:
Review the bracket below. This spider key will be
helpful in making your taxonomic key.
Step 3:
Choose a trait that can divide your animals into
2 equal groups.
Has fins/flippers
mahi-mahi
monk seal
humuhumunukunukuapuaa
uhu
Has no fins/flippers
mongoose
nene
amakihi
pig
Step 4:
Write the traits onto the brackets.
Has fins/flippers
Has no fins/flippers
Step 5:
Divide the first group into 2 smaller groups, using common
traits (observable characteristics). Write traits where the x’s
are.
Has fins/flippers
monk seal
humuhumunukunukuapuaa
x
Has 3 or more colors
x
Has less than 3 colors
mahi-mahi
uhu
Step 6:
Write the traits onto the brackets.
3 or more colors
Has fins/flippers
Less than 3 colors
Has no fins/flippers
Step 7:
Divide the second group into 2 smaller groups, using
common traits. Write traits where the x’s are.
No fins/flippers
mongoos
e
x
nene
x
amakihi
Has feathers
pig
Has no feathers
Step 8:
Write or type in the traits on to the brackets.
3 or more colors
Has fins/flippers
Less than 3 colors
Has Feathers
Has no fins/flippers
Has no feathers
Step 9:
Separate each smaller group (pair), using common traits.
Has 3 or more colors
humuhumunukunukuapuaa
Pointy head
mahi-mahi
Rounded head
Has less than 3 colors
monk seal
Flippers
uhu
No flippers
Step 10:
Copy the traits onto the bracket, as well as the
individual animals’ names.
3 or more colors
Has fins/flippers
Less than 3 colors
Has feathers
Has no fins/flippers
Has no feathers
Pointy head
Rounded head
mahi-mahi
humuhumunukunukuapuaa
Flippers
monk seal
No flippers
uhu
Step 11:
Separate each smaller group (pair), using common traits.
Has feathers
Has no feathers
amakihi
nene
Yellow
Not Yellow
mongoose
No horns
pig
Horns
Step 12:
Copy the traits onto the bracket, as well as the
individual animals’ names.
3 or more colors
Has fins/flippers
Less than 3 colors
Has feathers
Has no fins/flippers
Has no feathers
Pointy head
Rounded head
mahi-mahi
humuhumunukunukuapuaa
Flippers
monk seal
No flippers
uhu
Yellow
amakihi
Not yellow
nene
No horns
mongoose
Horns
pig
Step 13:
Now we can fill in the taxonomic key.
3 or more colors
Pointy head
Rounded head
Has fins/flippers
Less than 3 colors
Has feathers
Has no fins/flippers
Has no feathers
mahi-mahi
humuhumunukunukuapuaa
Flippers
monk seal
No flippers
uhu
Yellow
amakihi
Not yellow
nene
No horns
mongoose
Horns
pig
Flippers
Has fins/flippers
No flippers
Has no fins/flippers
Has feathers
3 or more colors
Has no feathers
Less than 3 colors
Yellow
Pointy head
Not yellow
Rounded head
No horns
Horns
Step 14:
Copy the traits onto
the first column of
the taxonomic key.
Now we are ready to fill in the Second Column.
Step 15:
Since 1a leads to Step 2, write “go to 2” on the
second column next to 1a.
Pointy head
3 or more colors
Has fins/flippers
Rounded head
Less than 3 colors
Has feathers
Has no fins/flippers
Has no feathers
Has fins/flippers
mahi-mahi
humuhumunukunukuapuaa
Flippers
monk seal
No flippers
uhu
Yellow
amakihi
Not yellow
nene
No horns
mongoose
Horns
pig
Go to 2
Step 16:
Likewise, 1b leads to Step 5, so write “go to 5”
on the second column next to 1b.
Pointy head
Has fins/flippers
3 or more colors
Rounded head
Less than 3 colors
Has feathers
Has no fins/flippers
Has no feathers
1
No fins/flippers
mahi-mahi
humuhumunu
-kunukuapuaa
Flippers
monk seal
No flippers
uhu
Yellow
amakihi
Not yellow
nene
No horns
mongoose
Horns
pig
Go to 5
Step 17:
Repeat the same thing for steps 2a and 2b.
Pointy head
3 or more colors
Has fins/flippers
Rounded head
Has Flippers
Less than 3 colors
Has Feathers
Has no flippers
Yellow
Not yellow
Has no fins/flippers
mahi-mahi
humuhumunukunukuapuaa
monk seal
uhu
amakihi
nene
No horns
mongoose
Horns
pig
Has no feathers
Has fins/flippers
Go to 1
Has no fins/flippers
Go to 5
3 or more colors
Go to 3
Less than 3 colors
Go to 4
Step 18:
Steps 3a, 3b, 4a, and 4b lead to animal names,
so copy the animal names in column 2.
Has
fins/flippers
> 3 colors
< 3 colors
Has no
fins/flippers
Has feathers
No feathers
Pointy head
Round head
Flippers
mahi-mahi
humuhumunu
-kunukuapuaa
No flippers
monk seal
uhu
Yellow
amakihi
Not yellow
nene
No horns
mongoose
Horns
pig
Pointy head
mahi-mahi
Round head
humuhumunukunukuapuaa
Flippers
monk seal
No flippers
uhu
Step 19:
Repeat for steps 5a through 7b, and we are done!
Pointy head
3 or more colors
Rounded head
Has fins/flippers
Less than 3 colors
Flippers
monk seal
No flippers
uhu
Yellow
Has feathers
Not yellow
Has no fins/flippers
No horns
Has no feathers
mahi-mahi
humuhumunukunukuapuaa
Horns
Feathers
Go to 6
No feathers
Go to 7
Yellow
amakihi
Not yellow
nene
No horns
mongoose
Horns
pig
amakihi
nene
mongoose
pig
Final
Finished taxonomic key.
Has fins/flippers
Go to 1
Has no fins/flippers
Go to 5
3 or more colors
Go to 3
Less than 3 colors
Go to 4
Pointy head
mahi-mahi
Rounded head
humuhumunukunukuapuaa
Flippers
monk seal
No flippers
uhu
Feathers
Go to 6
No feathers
Go to 7
Yellow
amakihi
Not yellow
nene
No horns
mongoose
Horns
pig
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