Apple Inc. is an American multinational technology company headquartered in Cupertino, California, that designs, develops, and sells consumer electronics, computer software, and online services.
Generally, laboratory mice become sexually mature between fi ve and eight weeks of age. Males of most. strains usually mature sexually by six weeks of age. DBA/2J (000671) and C3H/HeJ (000659) mice are precocious: females can. conceive when they are as young as 23 days old.
1 A litter of six to ten young are born after a gestation period of about three weeks. 2  Young rats are weaned at around 20 days of age and can breed at three to four months of age.  Younger rats will mate in the same location in which they were born or will migrate to a new, unoccupied territory.