Dilute suppressor, a new suppressor gene in the house mouse.

Dilute suppressor, dsu, a new fully penetrant autosomal recessive mutation, acts by restoring melanocytes of homozygous dilute (d/d) mice to normal shape and almost normal number. This action creates a nondilute appearing coat color in dilute mice. Dilute suppressor is located on chromosome 1 linked to isocitrate dehydrogenase (Idh-I) with 6.25 +/- 3.49 percent recombination, and is not linked to dilute, which is on chromosome 9.