A dog breeder has asked you for advice. The breeder keeps Alaskan huskies, which she races...

  

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"A dog breeder has asked you for advice. The breeder keeps Alaskan huskies, which she races in sledding events. She would like to breed huskies that run faster." The running speeds (m/s) of 15 families of dogs are shown in Table 1. Table 1: Midparent and midoffspring running speeds (meters per second) for fifteen families of Alaskan huskies used in sled racing events. (Note: values differ from your book!) Family 1 Midparent 9.1 Midoffspring 10.8 2 7.6 8 3 15.2 13.6 4 4.3 5.2 5 11.3 6.6 6 12.5 6.2 7 8.9 12.5 8 8.2 7.4 9 6.3 3.4 10 12.7 6.7 11 13.9 7.9 12 7.3 13.6 13 5.9 7.4 14 12.8 12.1 15 11.9 11.3 a. Enter these data into Excel or another statistical program. Generate a scatter plot, and then use the trend-line function to place a best-fit line on the graph. Also, select the appropriate options to include the equation for this line on your graph. b. Based on the equation generated in a, what is the narrow-sense heritability? c. Now imagine that the dog breeder picks the four pairs of parents with the highest midpoint values and uses them as breeders for the next generation of dogs. What is the selection differential in this scenario? d. Use your estimate of heritability from part b and the selection differential from part c to predict the response to selection (R). e. Once you've found R, determine the predicted average running speed of the dogs in the next generation. "A dog breeder has asked you for advice. The breeder keeps Alaskan huskies, which she races in sledding events. She would like to breed huskies that run faster." The running speeds (m/s) of 15 families of dogs are shown in Table 1. Table 1: Midparent and midoffspring running speeds (meters per second) for fifteen families of Alaskan huskies used in sled racing events. (Note: values differ from your book!) Family 1 Midparent 9.1 Midoffspring 10.8 2 7.6 8 3 15.2 13.6 4 4.3 5.2 5 11.3 6.6 6 12.5 6.2 7 8.9 12.5 8 8.2 7.4 9 6.3 3.4 10 12.7 6.7 11 13.9 7.9 12 7.3 13.6 13 5.9 7.4 14 12.8 12.1 15 11.9 11.3 a. Enter these data into Excel or another statistical program. Generate a scatter plot, and then use the trend-line function to place a best-fit line on the graph. Also, select the appropriate options to include the equation for this line on your graph. b. Based on the equation generated in a, what is the narrow-sense heritability? c. Now imagine that the dog breeder picks the four pairs of parents with the highest midpoint values and uses them as breeders for the next generation of dogs. What is the selection differential in this scenario? d. Use your estimate of heritability from part b and the selection differential from part c to predict the response to selection (R). e. Once you've found R, determine the predicted average running speed of the dogs in the next generation.