Scientists also use DNA and amino acid sequencing to create cladograms. The chart below shows the amino acid sequence for the protein cytochrome-c in seven vertebrates.

The data table below shows the number of differences.

Number of Amino Acid Differences
from Human Cytochrome-c
Species
Number
Differences
Human
0
Horse
5
Chicken
6
Frog
8
Shark
13
Monkey
1
Rabbit
4

Interactive exercise. Assistance may be required. Create a cladogram based on amino acid differences by dragging the picture below to the correct location.