Pedigree segregating for domestic cat Tabby patterns and linked markers from cat chromosome B1. Circles represent females, squares represent males, filled symbols indicate phenotypically Tabby Abyssinian cats, symbols with a center dot are Tabby blotched patterned cats and striped symbols indicate Tabby mackerel pattern cats. Unknown patterns are presented as open symbols. Unknown cats had solid, non-agouti colours, thus Tabby patterns could not be distinguished. Symbols with a diagonal slash represent cats that were not available for the analyses. Numbers under the symbols represent the laboratory sample numbers. Genotypes for the seven linked markers (FCA023, FCA809, FCA811, FCA812, FCA700, FCA254 and FCA813) are represented below the cat identification numbers respectively and are presented as haplotypes. No genotype data are represented by ‘0’. Cat H118 was duplicated to break an inbreeding loop and is also represented as B118. Cats that are recombinants between at least one marker in the haplotype and the Tabby phenotype are indicated with an ‘R’.