Quantitative genetics and fitness: lessons from Drosophila

摘要: This paper examines patterns of heritability and genetic covariance between traits in the genus Drosophila. Traits are divided into categories, morphology, behaviour, physiology life history. Early theoretical analyses suggested that history should have heritabilities lower than those other categories. Variable pleiotrophy, environmental variation, mutation niche variation may, however, maintain high heritabilities. In Drosophila morphological or physiological but may exceed 20 per cent. The pattern behavioural is similar to traits. Genetic all positive variable sign. Negative supports pleiotropy hypothesis factors such as heterogeneity, cannot be excluded.