Head spot and dilute mutations in the Norway rat.
A mutant allele of a new white spotting locus in the Norway rat is described, which is designated as head spot (hs). The allele is inherited as a recessive to normal. The expression is regularly manifested and has the form of a white sport of variable size in the middle of the forehead just above the eyes. A probable reoccurrence of blue dilution coat color is also reported. Tests for genetic linkage for hs indicate that it is independent of the agouti, dilute, and hooded loci.
Robinson
R
R
St. Stephens Nursery, London, UK.
D000483:Alleles; D000818:Animals; D005260:Female; D006200:Hair Color / Q000235:genetics*; D006257:Head; D008297:Male; D009154:Mutation; D051381:Rats / Q000235:genetics*