The brain mass in a population of mice has a phenotypic variance of 0.56 g² and an environmental variance of 0.14 g². What is the broad sense heritability (H²)? A) 1.54 B) 0.25 C) 0.75 D) 0.42 E) The broad sense heritability cannot be calculated with the data provided

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Broad sense heritability (H^2) is calculated as the ratio of genetic variance (VG) to phenotypic variance (VP), where VP = VG + VE (environmental variance). Given VP = 0.56 and VE = 0.14, VG = VP - VE = 0.56 - 0.14 = 0.42. Thus, H^2 = VG / VP = 0.42 / 0.56 = 0.75.

The Brain Mass in a Population of Mice Has a Phenotypic