CKIepsilon mutation | A mutation in CKIepsilon called tau, if homozygous, shortens the circadian period (by 20%), increases metabolic rate (by 20%), and increases lifespan by 14-16% under conditions of constant darkness [12054192].
Male and female wild-type hamsters are heavier than homozygous mutants throughout the entire lifespan, and heterozygous mutants have intermediate weight [12054192]. | Hamster | +14 to +16 | — | — |