The laboratory mouse has several unique characteristics, and there are vast differences in normal anatomy, physiology, and behaviour among different strains of mice, many of which represent abnormalities arising from homozygosity of recessive or mutant traits in inbred mice. | The laboratory mouse has several unique characteristics, and there are vast differences in normal anatomy, physiology, and behaviour among different strains of mice, many of which represent abnormalities arising from homozygosity of recessive or mutant traits in inbred mice. |