Now these animals are different from one another, because they have different genes. So that suggests that somewhere in these genes, somewhere in the DNA, are genes for aging, genes that allow them to have different lifespans.
Aceste animale sunt diferite unele fata de altele, deoarece au gene diferite Aceasta sugereaza ca, printre aceste gene, undeva in ADN-ul lor se gasesc genele responsabile cu imbatrinirea, gene care determina ca speranta lor de viata sa fie diferita.