Tabby cat or Sp/Sp together with Mc/mc and Mc/Mc and A/a and A/A. The Ticked tabby pattern is on a different gene locus than the Mackerel and Classic tabby patterns, and is epistatic to the other patterns. A dominant mutation, "T / t", masks any other tabby pattern, producing a non-patterned, or agouti tabby, with virtually no stripes or bars. If the Ticked tabby pattern gene is present, any other tabby pattern is masked. Cats homozygous for the ticked allele ("T / T") have less barring than cats heterozygous for the ticked allele. When a cat of this genetic make-up is selectively
Cat body-type mutation Cat body-type mutation Cats, like all living organisms, occasionally have mutations that affect their body type. Sometimes, these cat body-type mutations are striking enough that humans select for and perpetuate them. This is not always in the best interests of the cat, as many of these mutations are harmful; some are even lethal in their homozygous form. This page gives a selection of cat body type mutant alleles and the associated mutations with a brief description. Jb = Japanese bobtail gene (autosomal dominant). Cats homozygous and heterozygous for this gene display shortened and kinked tails. Cats homozygous for the gene