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1. Why are spindle fibers important for mitosis? (5 points)–Answer below 2. State the four bases that make up DNA. (4 points)a.b.c.d.–Answer below: 3. What are the two base pairs? (2 points)a.b.–Answer below: 4. a. Define the term crossing over. (3 points) b. Explain why crossing over is important in meiosis. (3 points)–Answer below: 5. What are the two main differences between mitosis and meiosis? (4 points)a.b.–Answer below: 6. a. Explain the difference between mitosis and cytokinesis. (3 points) b. When does mitosis occur during the cell cycle? (1 point) c. When does cytokinesis occur during the cell cycle? (1 point)–Answer below: 7. Explain the differences that occur during cytokinesis of plant and animal cells. (5 points)–Answer below: 8. Refer to the image above, labeled A through E. The image details a stage of the cell cycle for a cell undergoing mitosis. Place the image in correct order by placing the letters in the correct sequence, according to the stages of mitosis. (5 points)a. Interphaseb. Prophasec. Metaphased. Anaphasee. Telophase/cytokinesis–Answer below: 9. Refer to the image above. What stage of mitosis is the cell identified above undergoing? (1 point)–Answer below: Metaphase 10. Refer to the image above. Place the cells identified with the letters A through E in correct order for a cell undergoing mitosis. (5 points)a. interphaseb. prophasec. metaphased. anaphasee. telophase/cytokinesis–Answer below: 11. Refer to the data on the corn kernel color ratio from Part III of the lab. a. What was the phenotypic ratio from Step 1? (2 points)b. What was the phenotypic ratio from Step 2? (2 points)c. What was the phenotypic ratio from Step 3? (Remember there were four possible types for this part of the lab.) (2 points)–Answer below: 12. Recall from the background information that purple kernels are dominant and yellow kernels are recessive. The second ear of corn was the result of crossing two heterozygous ears of corn male purple (Pp x Pp). This is represented by the Punnett square above. Complete the Punnett square by writing the correct letters that correspond to each number indicated in the table above. (4 points)a. 1b. 2c. 3d. 4–Answer below: 13. Once the Punnett square for Question 12 is complete, calculate the ratio of purple and yellow kernels (recall that if the dominant trait is present, it will be expressed). a. What is the ratio of purple to yellow kernels based on the Punnett square? (5 points)b. How did this compare to the ratio obtained from counting the corn kernels for ear number two in part III of the lab? (5 points)–Answer below: 14. Recall from the background information that purple kernels are dominant and yellow kernels are recessive. Also recall that smooth kernels are dominant and wrinkled kernels are recessive. The third corn ear was the result of crossing a male ear of corn with the following gametes: PpSs, with a female ear of corn with the same gametes: PpSs. This is represented by the Punnett square, above. Complete the Punnett square by writing the correct letters that correspond to each number indicated in the table (for example, PPSS or ppss). (8 points)–Answer below: 15. Once the Punnett square for Question 14 is complete, calculate the ratio of corn kernel varieties (recall that if the dominant trait is present, it will be expressed). a. What is the ratio of kernels based on the Punnett square? (5 points)b. How does this compare to the ratio obtained from counting the corn kernels? (5 points)–Answer below: 16. (Application) How might the information gained from this lab pertaining to mitosis and meiosis be useful to the student or how can the student apply this knowledge to everyday life as a non-scientist? (20 points)–Answer below:.

1. Why are spindle fibers important for mitosis? (5 points)–Answer below

2. State the four bases that make up DNA. (4 points)a.b.c.d.–Answer below:

3. What are the two base pairs? (2 points)a.b.–Answer below:

4. a. Define the term crossing over. (3 points) b. Explain why crossing over is important in meiosis. (3 points)–Answer below:

5. What are the two main differences between mitosis and meiosis? (4 points)a.b.–Answer below:

6. a. Explain the difference between mitosis and cytokinesis. (3 points) b. When does mitosis occur during the cell cycle? (1 point) c. When does cytokinesis occur during the cell cycle? (1 point)–Answer below:

7. Explain the differences that occur during cytokinesis of plant and animal cells. (5 points)–Answer below:

8. Refer to the image above, labeled A through E. The image details a stage of the cell cycle for a cell undergoing mitosis. Place the image in correct order by placing the letters in the correct sequence, according to the stages of mitosis. (5 points)a. Interphaseb. Prophasec. Metaphased. Anaphasee. Telophase/cytokinesis–Answer below:

9. Refer to the image above. What stage of mitosis is the cell identified above undergoing? (1 point)–Answer below:

Metaphase

10. Refer to the image above. Place the cells identified with the letters A through E in correct order for a cell undergoing mitosis. (5 points)a. interphaseb. prophasec. metaphased. anaphasee. telophase/cytokinesis–Answer below:

11. Refer to the data on the corn kernel color ratio from Part III of the lab. a. What was the phenotypic ratio from Step 1? (2 points)b. What was the phenotypic ratio from Step 2? (2 points)c. What was the phenotypic ratio from Step 3? (Remember there were four possible types for this part of the lab.) (2 points)–Answer below:

12. Recall from the background information that purple kernels are dominant and yellow kernels are recessive. The second ear of corn was the result of crossing two heterozygous ears of corn male purple (Pp x Pp). This is represented by the Punnett square above. Complete the Punnett square by writing the correct letters that correspond to each number indicated in the table above. (4 points)a. 1b. 2c. 3d. 4–Answer below:

13. Once the Punnett square for Question 12 is complete, calculate the ratio of purple and yellow kernels (recall that if the dominant trait is present, it will be expressed). a. What is the ratio of purple to yellow kernels based on the Punnett square? (5 points)b. How did this compare to the ratio obtained from counting the corn kernels for ear number two in part III of the lab? (5 points)–Answer below:

14. Recall from the background information that purple kernels are dominant and yellow kernels are recessive. Also recall that smooth kernels are dominant and wrinkled kernels are recessive. The third corn ear was the result of crossing a male ear of corn with the following gametes: PpSs, with a female ear of corn with the same gametes: PpSs. This is represented by the Punnett square, above. Complete the Punnett square by writing the correct letters that correspond to each number indicated in the table (for example, PPSS or ppss). (8 points)–Answer below:

15. Once the Punnett square for Question 14 is complete, calculate the ratio of corn kernel varieties (recall that if the dominant trait is present, it will be expressed). a. What is the ratio of kernels based on the Punnett square? (5 points)b. How does this compare to the ratio obtained from counting the corn kernels? (5 points)–Answer below:

16. (Application) How might the information gained from this lab pertaining to mitosis and meiosis be useful to the student or how can the student apply this knowledge to everyday life as a non-scientist? (20 points)–Answer below:.

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