Prolonged persistence of mutagenic DNA lesions in somatic cells - NatureSome DNA lesions can persist unrepaired through multiple cell cycles, generating unique mutations.High-resolution phylogenetic trees can help track DNA lesions and their mutations across somatic cell divisions.
To build a giant sheep, man spends 10 years smuggling, cloning, and inseminatingDolly's cloning ushered in a new era, proving somatic cells can recreate entire organisms and sparking a commercial cloning industry.