John, noted acarologist (he studies mites) and fancy humming bird breeder hobbyist, is attempting to breed giant puffing humming bird that he can present at the fancy balls given in his glittering social circle. After years of experimenting with humming bird, John has found that the slope of the least squares regression of Midoffspring on Midparent values is 0.75. All the humming birds were allowed to breed, and a first batch of offspring was produced. The table below presents data on the puffing ability (in cm3) of 10 breeding families of humming bird in his dovecote: Family midparent mid offspring (first batch) 1 55 56 2 68 72 3 77 81 4 37 40 5 25 30 6 34 32 7 44 44 8 23 49 9 60 39 10 67 68 All the humming birds were allowed to breed, and a first batch of offspring was produced. These offspring were used to calculate the midoffspring values above, and when John calculated the slope of the least squares regression of Midoffspring on Midparent values, he found the slope to be 0.75. a)What is the average puffiness of the parental generation? b)What is the average puffiness of the first batch of offspring? c) Did John succeed in breeding puffier humming bird ? Why or why not? John was disappointed in the puffiness of the first batch of offspring, so he shipped all these offspring to market. John desperately wanted to breed an even bigger, puffier humming bird, so for a second batch of offspring, he let only certain humming bird breed. Noting that families 1, 2, and 3 have midparent values that are above average, he allowed only the parents in those three families to breed. d) What would the selection differential (S) be? e) Calculate a response to selection. f) By adding any predicted increase in size to the average character value of all of the parents (not just the ones allowed to breed), John can predict the average puffing ability of his humming bird flock in the next generation. What is this predicted value? g) John compared the predicted puffing ability of the current batch of offspring to the puffing ability of the first batch that he had discarded. This time, did John succeed in breeding an even better humming bird? Justify your answer. please answer all the questions
John, noted acarologist (he studies mites) and fancy humming bird breeder hobbyist, is attempting to breed giant puffing humming bird that he can present at the fancy balls given in his glittering social circle. After years of experimenting with humming bird, John has found that the slope of the least squares regression of Midoffspring on Midparent values is 0.75. All the humming birds were allowed to breed, and a first batch of offspring was produced. The table below presents data on the puffing ability (in cm3) of 10 breeding families of humming bird in his dovecote:
| Family | midparent | mid offspring (first batch) |
|
1 |
55 | 56 |
| 2 | 68 | 72 |
| 3 | 77 | 81 |
| 4 | 37 | 40 |
| 5 | 25 | 30 |
| 6 | 34 | 32 |
| 7 | 44 | 44 |
| 8 | 23 | 49 |
| 9 | 60 | 39 |
| 10 | 67 | 68 |
All the humming birds were allowed to breed, and a first batch of offspring was produced. These offspring were used to calculate the midoffspring values above, and when John calculated the slope of the least squares regression of Midoffspring on Midparent values, he found the slope to be 0.75.
a)What is the average puffiness of the parental generation?
b)What is the average puffiness of the first batch of offspring?
c) Did John succeed in breeding puffier humming bird ? Why or why not?
John was disappointed in the puffiness of the first batch of offspring, so he shipped all these offspring to market. John desperately wanted to breed an even bigger, puffier humming bird, so for a second batch of offspring, he let only certain humming bird breed. Noting that families 1, 2, and 3 have midparent values that are above average, he allowed only the parents in those three families to breed.
d) What would the selection differential (S) be?
e) Calculate a response to selection.
f) By adding any predicted increase in size to the average character value of all of the parents (not just the ones allowed to breed), John can predict the average puffing ability of his humming bird flock in the next generation. What is this predicted value?
g) John compared the predicted puffing ability of the current batch of offspring to the puffing ability of the first batch that he had discarded. This time, did John succeed in breeding an even better humming bird? Justify your answer.
please answer all the questions
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