Potentially harmful DNA mutations can amass in men's sperm as they age, new research has found, which may in turn impact the number of mutations passed on to children – and the risks of disease in the next generation. Mutations occur in DNA when cells replicate, and arise either by random chance or because of environmental stresses . They can impact how well the body works, or have no observable effect at all. Mutations accumulate as time goes by, just like wear and tear on a car – but it hasn'

Tag-uri: DNA