Some traits that alter the lifespan of a species also modify

Last updated: 7/9/2022

Some traits that alter the lifespan of a species also modify its ability to reproduce. Over time, these traits are likely to disappear from a population if they increase an organism's Prevalence of such a trait may change because natural selection acts only on alleles that affect an organism's organisms at high risk of being preyed upon or dying of disease, natural selection favors alleles that promote despite the negative effects of the alleles. Alleles that fight disease in young organisms, for example, may contribute to some aspects of senescence by generating the organism later in life.