Figure 4

LOD scores for age-specific male mortality at chromosome 2. The contour plot shows LOD scores for age-specific mortality in males, as a function of chromosomal position and age (in weeks). The grey bar indicates the 2-LOD interval for the life span QTL designated LS2.1 (the presumed lethal). Significance thresholds vary between weeks from 2.3 to 3.1. Note that the QTL continues to condition age-specific mortality up until and including week 4.