Question

1. Imagine that the average trichome number of our parental population of our brassica was 8,...

1. Imagine that the average trichome number of our parental population of our brassica was 8, and the average of the population we allowed to survive was 14. Imagine that when we planted the seeds of those survivors we found the average trichome number was 11. Calculate the selection differential.

2. With the values above calculate the response to selection

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Answer #1

Average trichome number of parental population = 8
Average trichome number of breeding individuals (individuals allowed to survive) = 14
Average trichome number in progeny population = 11

1)

Selection Differential (S)
= Average trichome number of breeding individuals - Average trichome number of parental population
= 14 - 8 = 6

2)

Response to selection (R)
= Average trichome number in progeny population - Average trichome number of parental population
= 11 - 8 = 3

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