1. What part is presented under letter A in the diagram? a. clade b. node C. root d. sister group 2. How about the part under letter B? a. clade b. node C. root d. sister group 3. Based on the diagram, how were animals classified? a. based on their amino acid sequence b. based on their DNA sequences c. based on their morphological structure d. Both A and C 4. Which of the following is the correct interpretation of the diagram? a. Mammals are closely related to turtles. b. Mammals and birds are closely related to each other. c. Mammals are equally related to the birds and turtles. d. Mammals are related to birds but not to turtles.

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