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Introduction to Quantitative Genetics

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Example of Predicting the Response to Selection

A sunflower population has a mean of 100 days to flower (T). Parents with
a mean of 90 days to flowering were selected (T_{s}). The heritablity
for the trait is *h*^{2} = 0.2 days to flowering. What will
be the mean of the population if these parents are crossed?

R = *h*^{2}S
R = 0.2(90 -100)

R = -2 days

**New population** = T' = (100 - 2) = 98 days to flowering