Cladograms

Master cladograms! Build and interpret evolutionary trees to understand how organisms are related. Biology worksheet for grades 9-12.

I. Making a Cladogram. Fill in the table. Indicate which traits that an organism has by choosing yes or no. Yes Yes Yes Yes No Yes Yes Yes No No Yes Yes No No No Yes II. Making a Cladogram. Place the traits on the lines and the organisms in the text boxes. worm spider ant fly cells legs 6 legs wings III. Analyzing a Cladogram. 1. What trait separates Lampreys from tuna on this cladogram? jaws2. What separates a salamander from a turtle? amniotic egg3. Which organism is most related to the leopard? turtle4. What four traits do these two organisms share? amniotic egg , four walking legs, jaws, vertebral column5. Which organism will have the DNA most similar to the turtle? salamander6. Which organism's DNA will differ the most from the leopard? lancelet