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Set A: 1. Dillon decides to set up an experiment to see if the environment affects the gender of a newly hatched alligator. He puts a set of ten alligator eggs in an incubator at 37 degrees Celcius, another set of 10 eggs in a cooler at 29 degrees Celcius, and he leaves the third set of 10 eggs out at a room temperature of 32 degrees Celcius. He gives all of the eggs the same amount of time to hatch. When the eggs hatch, he records the gender of each baby alligator produced and the number of each gender from each set of eggs. A. What is the independent variable in this experiment? B. What is the dependent variable in this experiment? C. What would be two constant variables in this experiment? D. Which is the control group in this experiment? E. Label the graph below as though you were going to graph the data from this experiment. Set B: Consider the demonstration shown in class between hydrogen peroxide and Dawn dishwashing liquid. A. Why did the reaction done by Mrs. Dyer do more than the reaction done by your classmate? B. Make a general statement about how concentration affects reaction rate. Consider the reaction that takes place when a glow stick is broken and shook up. C. What would happen if you put the glow stick in hot water? D. What would happen if you put the glow stick in cold water? E. Why would this happen? F. Make a general statement about how temperature affects reaction rate. Consider an alka-seltzer tablet dropped into a glass of water. G. How would the reaction rate of the tablet and water be affected if the tablet were crushed before being dropped into the water? H. Explain why this would happen. I. Make a general statement about how surface area affects reaction rate. Use the data below to answer the questions that follow. Experiment 1 2 3 4 Reactant [A] 0.100 0.200 0.100 0.100 Reactant [B] 0.100 0.100 0.200 0.100 Reactant [C] 0.100 0.100 0.100 0.400 Reaction Rate 0.100 0.200 0.050 0.100 I. How were the concentrations of the reactants changed in Experiment 2 (compared to Experiment 1)? J. How did the change mentioned above affect the reaction rate? K. How would you predict the rate of the reaction from the data table above would change if the concentration of Reactant A were quadrupled? Set C: 1. Two striped cats have a litter of kittens. Three of the kittens are striped and one has a solid coat. The striped coat is probably what form of the trait? 2. Describe the genotypes of the two parents who produced the offspring in this cross. 3. In cats, a long tail is dominant and a bob-tail is recessive. Two cats have mated and had a litter of six kittens, 4 with a long tail and two with bob tails. One parent cat has a long tail and the other has a short tail. What are the genotypes of the two parent cats in this cross? 4. In fruit flies, normal wings= AA miniature wings = Aa no wings= aa The cross of which two phenotypes above will produce only fruit flies with miniature wings? 5. Muscular dystrophy is a trait that affects mostly males. It results in muscle weakness, loss of the ability to walk or breathe, and, eventually, an early death. If a mother is a carrier for this disorder but her husband is healthy, what is the probability that this couple will have a child having this disorder? 6. A cross between a certain type of blue bird and a white bird of the same species produces a silver bird. What is the probable mode of inheritance of color in this species of bird? What would be the genotype of each color of bird? What would be the results of a cross between two silver birds? 7. One parent has type A blood, the other has type B. All four of their children have either type AB or type B blood. What are the probable genotypes of these two parents? 8. When a red fruit plant and a yellow fruit plant are crossed, orange fruit plants are produced. What is the probably mode of inheritance of fruit color in these plants? What are the genotypes for each color of fruit? What would be the results of a cross between a yellow fruit plant and an orange fruit plant?