Older genomes have more dodgy genes
[ad_1] Nutrient-sensing systems can be tuned up; senescent cells targeted for destruction; stem cells supplied afresh; epigenomes spruced up. For many of the hallmarks of ageing hope is in the air. But some are more refractory. Perhaps the toughest of all is genomic instability: the persistent accumulation of mutations. By middle age, to take an…