phylogenetic trees and cladograms

Cytochrome c is a protein made up of 104 amino acids. It is found in the mitochondria and aides in the electron transport chain during cellular respiration. The data table represents the number of amino acid differences in cytochrome c between organisms A, B, C, and D.

The phylogenetic trees represent possible interpretations of the data in the chart.

Which two phylogenetic trees represent the data most accurately? (choose 2)

• 
• 
• 

The class that goes in blank o is...

The class that goes in blank k is...

What number is the common ancestor of C and D

• 1

• 2

• 3

• 4

What number is the common ancestor of C and D

• 1

• 2

• 3

• 4

All bacteria is

• prokaryotic and mulitcellular

• eukaryotic and multicellullar

• prokaryotic and unicellular

• eukaryotic and unicellular

Which of the following organisms are LEAST closely related?

• organisms that share a domain
• organisms that share a family 
• organisms that share a genus 
• organisms that share a species 

Which group on the cladogram arose FIRST?

• Theropods

• Allosaurus

• Robin

• Velociraptor

Based on the figure, which organism is most closely related to the polar bear?

• black bear

• european brown bear

• western north american brown bear

• asian brown bear

According to the cladogram, which of the following is NOT a derived character?

• light bones

• Allosaurus

• down feathers

• 3-toed foot; wishbone