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
Mackerel for about 75% of the total catch of scombroid mackerels. Chilean jack mackerel are the most commonly fished non-scombroid mackerel, fished as heavily as chub mackerel (see second graph on the right). The species has been overfished, and its fishery may now be in danger of collapsing. Smaller mackerel behave like herrings, and are captured in similar ways. Fish species like these, which school near the surface, can be caught efficiently by purse seining. Huge purse seiner vessels use spotter planes to locate the schooling fish. Then they close in using sophisticated sonar to track the shape of the shoal.