. A breeder wishes to estimate narrow sense heritability for adult weight in a population of chickens. The mean weight of the parental population was 6 pounds. Chickens with a mean weight of 10 pounds were used to produce the next generation, which had a mean weight of 8 pounds. What is the narrow-sense heritability for these chickens? Would this estimate be accurate if offspring and parents received a different diet? Explain.
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12. In your chicken population, the mean egg weight is 40 g, the variance in egg weight is 16 g2, the narrow-sense heritability for egg weight is 0.6, and the repeatability for egg weight is 0.7. You want to increase egg weight in your population, so you select individuals with the highest egg weight. The mean egg weight of the selected individuals is 48 g. What would you expect the mean egg weight to be in the next generation? [2pts] A. 49.6 g B. 45.6 g C. 44.8 g D. 48 g
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