Autosomal and X-Linked Additive Genetic Variation for Lifespan and Aging: Comparisons Within and Between the Sexes in Drosophila melanogaster.

Chromosomal variances for aging were, in general, estimated with more uncertainty, but were significantly larger than zero for male and female A lines (LRT on REML-fitted models: both X 2 1 > 14.0, P < 0.001), male X -lines ( X 2 1 = 6.40, P = 0.011), and marginally nonsignificant for female X -lines ( X 2 1 = 3.83, P = 0.050) ( Figure 2 , Figure S3 , and Table 1 ).

also in 448 other papers