The nonlinearity of offspring-parent regression for total sternopleural bristle number ofDrosophila melanogaster

✍ Scribed by D. R. Gifford; J. S. F. Barker

• Book ID: 104672079
• Publisher: Springer
• Year: 1991
• Tongue: English
• Weight: 450 KB
• Volume: 82
• Category: Article
• ISSN: 0040-5752
• DOI: 10.1007/bf00226216

✦ Synopsis

A test of the linearity of the offspring-midparent regression for total sternopleural bristle number showed significant departure from linearity, with a tendency for higher heritability at higher values of the character. Offspring-midparent regression coefficients for each of four subdivisions of the total range of bristle number were not significantly different. The nonlinearity of offspring-midparent regression detected in this study may be due to either chance effects, genotypic asymmetry of genes with large effect, distribution asymmetry, or a combination of these factors. Further work is required to determine the extent and causes of nonlinearity of offspring-parent regression.