Natural Selection and North Carolina
Natural Selection Case Study QuestionsName _______________________________ Part I 1. Which state has more plain clover? North Carolina 2. Which state has more striped clover? Minnesota 3. Which state has a warmer average temperature? North Carolina 4. Which state has more days of freezing temperatures? North Carolina 5. Which state has drier conditions? Minnesota 6. Which state has more mollusks? North Carolina Part II 7. Why are the two gene products that are needed to produce active cyanide stored in different parts of the cell?
They are stored in different cells because one is covered in stripes which the striped clover contains cyanide while the other is plain which the plain clover don’t contains cyanide 8. What are two ways that the cells can be disrupted causing the two components to come together and produce active cyanide? 9. What would be the advantage of producing cyanide? It allows perennial plants to survive which it grow again in the spring 10. Is there any disadvantage to producing cyanide? Explain.
Yes, It can be damage caused by freezing and plant eaters can harm plant cells 11. What do these results tell you about the interaction between the snails and the clover? 12. It takes extra energy to produce the white stripe in the clover. Why would a clover expend the extra energy to produce a stripe rather than using the energy for growth? It would expand the extra energy because of Fitness. Part III 13. Which factors might contribute to / or inhibit the growth of the plain clover in MN?
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Bacteria that produce vaccines and hormones 14. Which factors might contribute to / or inhibit the growth of the striped clover in MN? Crops that resist herbicides and diseases or contain natural pesticides 15. Which factors might contribute to / or inhibit the growth of the plain clover in NC? Plants which can be eaten as vaccines 16. Which factors might contribute to / or inhibit the growth of the striped clover in NC? Growth hormones to produce lager faster offsprings 17.
Which factor do you think caused the most selection pressure on the clover population in MN? 18. Which factor do you think caused the most selection pressure on the clover population in NC? Part IV 19. Which type of clover will be more abundant in the shallow depressions? Why? Plain because it covers the area behind the oceanfront dunes 20. Which type of clover will be more abundant in on the hill and why? Stripes because water drains quickly
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