The falkor scoliosis mutant. (A) Bright field and (B) Alizarin-Red/Alcian-Blue stained skeletal preparations illustrate the homozygous falkor mutant phenotype. (C) Meiotic mapping places the mutation on Chr. 12 in the neighborhood of z4188 and z3801. (D) Mapping by regions of homozygosity suggests a causative mutation in korken gene on Chr. 12.