Part B: Comparative Anatomy Look closely at the scapula, sternum, tail, and feet of all 3 skeletons (Figure 1 and the casts). Note that both the Deinonychus and the bird have an extra toe that Deinonychus’ points backward. Fill in data in Table 1 by checking off which features you observe in each skeleton. Part C: Homologous Structures Carefully examine the drawings of the bones shown in Figure 2. Look for similarities among the various animals. Color each part of the human arm a different color. (Note: All bones of the wrist should be a single color; all the bones of the hand should be a different single color, etc.). Then color the corresponding bone in each of the other animals the same color as the human bone. Complete the Data Analysis/Results section of laboratory. + Part D: Analogous Structures Examine the butterfly wing and the bird wing shown in Figure 3. Complete Data Analysis/Results section of laboratory. Part E: Vestigial Structures Gradual changes have occurred through time that have in some cases reduced or removed the function of some of the body structures and organs. The penguin's wings and the leg bones of snakes are examples of this phenomenon. Examine the cavefish and minnow shown in Figure 4. They are related, but the cavefish is blind. Complete the Data Analysis/Results section of laboratory. Part F: Human Vestigial Structures Read the list of human vestigial structures shown in Table 3. Suggest a possible function for each structure and explain why it became vestigial. Record your answers in the table. Complete the Data Analysis/Results section of laboratory. Part G: Comparative Embryology Examine the embryos in Figure 5 and list the similarities of each embryo in Table 4. Complete the Data Analysis/Results section of laboratory. Data Analysis/Results: Part B: Comparative Anatomy Figure 1 Table 1 Deinonychus Characteristic Alligator Bird Narrow scapula (shoulder blade)
Part B: Comparative Anatomy Look closely at the scapula, sternum, tail, and feet of all 3 skeletons (Figure 1 and the Deinonychus’ casts). Note that both the Deinonychus and the bird have an extra toe that points backward. Fill in data in Table 1 by checking off which features you observe in each skeleton. Part C: Homologous Structures Carefully examine the drawings of the bones shown in Figure 2. Look for similarities among the various animals. Color each part of the human arm a different color. (Note: All bones of the wrist should be a single color; all the bones of the hand should be a different single color, etc.). Then color the corresponding bone in each of the other animals the same color as the human bone. Complete the Data Analysis/Results section of laboratory. + Part D: Analogous Structures Examine the butterfly wing and the bird wing shown in Figure 3. Complete Data Analysis/Results section of laboratory. Part E: Vestigial Structures Gradual changes have occurred through time that have in some cases reduced or removed the function of some of the body structures and organs. The penguin's wings and the leg bones of snakes are examples of this phenomenon. Examine the cavefish and minnow shown in Figure 4. They are related, but the cavefish is blind. Complete the Data Analysis/Results section of laboratory. Part F: Human Vestigial Structures Read the list of human vestigial structures shown in Table 3. Suggest a possible function for each structure and explain why it became vestigial. Record your answers in the table. Complete the Data Analysis/Results section of laboratory. Part G: Comparative Embryology Examine the embryos in Figure 5 and list the similarities of each embryo in Table 4. Complete the Data Analysis/Results section of laboratory. Data Analysis/Results: Part B: Comparative Anatomy Figure 1 Table 1 Characteristic Alligator Bird Deinonychus Narrow scapula (shoulder blade)
HOT%20science%20labs%20-%20Biology%202013%202014_Final%20Draft.docx