Marking

Unknown

Reference information

Name Unknown
Genotype ?/?
Mandatory picture? Yes
Frequency (all time) 7.52 % (3,599 rats)
Frequency (in the last 2 years) 5.37 % (93 rats)
Average lifespan (all causes) 17.7 months (♀: 18.3 months – ♂: 17 months)

Description

Undetermined or invisible marking (dilution, naked).