Sex Specificity, Life-Span QTLs, and Statistical Power

Heritability of life span is largely sex limited in Drosophila.

Males and females differ with respect to life span and rate of aging in most animal species. Such sexual dimorphism can be associated with a complex genetic architecture, where only part of the genetic variation is shared between the sexes. However, the extent to which this is true for life span and aging is not known, because studies of life span have given contradictory results and aging has ...

Life Span and Disability

Psychiatric functioning and disability have historically been considered separate from the broader disability field and have been measured differently than other medical conditions. This paper provides an overview of the current concepts and international advances in the classification of psychiatric disability and explores the controversies and goals within the proposed systems. It highlights ...

Life Course, Environment Change, and Life Span

The effect of continuous low-power He-Ne laser on the hatching rate and life span of Artemia urmiana

Artemia, as live food, is of vital importance in aquaculture. In this study, we have studied the helium-neon (He-Ne) laser beam with 10 mw on the hatching and life span of Artemia cysts. He-Ne laser irradiation was performed with a 10 mw power at 3, 4 and 5 h irradiation periods. Cysts were hatched by standard method. Hatching percentage after 4 h of irradiation was more than other treatments a...

Aging, life span, and senescence.

Research in the field of aging recently has entered a new era. Model systems have begun to provide insight into cellular, molecular, and organismal changes that are related intimately to aging. One important approach has been the identification of genes that determine the life span of an organism. The very existence of genes that when mutated can extend life span suggests that one or a few proc...