Selection for 12-day litter weight in mice.
D000818:Animals; D000831:Animals, Newborn / Q000254:growth & development*; D001835:Body Weight; D005260:Female; D014644:Genetic Variation; D005838:Genotype; D007774:Lactation; D008425:Maternal Behavior; D051379:Mice; D011247:Pregnancy; D012641:Selection, Genetic