Tabby Cat Colour and Pattern Genetics Explained
Tabby cats are among the most common and striking domestic cat coat patterns, but the term "tabby" actually covers a wide variety of distinct markings and colours. Although tabby cats may seem similar at first glance, the true variety lies in their genetics, which dictate the type of pattern and colours a cat will have. In this article, we explore the fascinating genetics that create the remarkable tabby coat patterns and explain the differences between them.
Understanding the Four Tabby Cat Coat Variants
Tabby refers to the pattern of markings rather than specific colours. There are four primary variants of tabby coat patterns: mackerel, classical, spotted, and ticked. Some cats feature these patterns combined with white patches or other colours, increasing variety.
Mackerel Tabby: The Classic Striped Look
The mackerel tabby is the pattern most people imagine when they think of a tabby cat. It resembles tiger stripes with narrow vertical lines running down the body, continuing onto the legs and forming rings around the tail. This pattern is dominant genetically, making it very common among non-pedigree cats (often called moggies) and breeds such as Manx, Siberian, and Norwegian Forest cats.
Classical Tabby: Swirls and Bullseyes
The classical tabby, also called blotched tabby, is characterised by wider, thicker stripes plus swirling patterns and large bullseye shapes on the sides. This pattern is recessive, so the cat must inherit this gene variant from both parents to express it, making it less common. Cats of this pattern can be seen in breeds like the Bengal (where it is known as marbling), Turkish Angora, and Maine Coon.
Spotted Tabby: Dots Instead of Stripes
Spotted tabbies showcase spots or rosettes across their coat instead of the stripes or swirls typical of other tabby patterns. While most spots are black on a lighter background, genetics allow spots in various colours. Breeds such as the Ocicat and Egyptian Mau often exhibit this pattern. The Bengal breed's spotted pattern is highly prized as it resembles wild cat markings.
Ticked Tabby: Subtle Elegance
Ticked tabby is a more subtle and ancient tabby pattern characterised by hairs banded with multiple colours, giving a salt-and-pepper or shaded effect without visible stripes or spots on the body. Close inspection reveals distinctive ticking or bands on each hair. This pattern is common in breeds like the Somali, Singapura, and Abyssinian, but it also appears in many domestic tabby cats.
Genetics Behind Tabby Patterns and Colours
The genetics controlling tabby patterns are complex, with several major genes playing roles:
- Agouti gene: This key gene determines whether a tabby pattern is visible. If present dominantly (A), individual hairs show banding which creates the patterns; if recessive (a/a), the tabby pattern is masked, resulting in solid-coloured coats that might have faint "ghost" tabby markings. Remarkably, all cats carry tabby genes, but agouti controls the expression.
- Tabby pattern genes: The Taqpep gene governs the type of tabby pattern displayed. Dominant alleles code for mackerel stripes, while recessive alleles express classic swirls and bullseyes. A separate gene, Sp (for spotted), alters the appearance to spots. Ticked tabby comes from another genetic variant affecting body markings.
- Melanin inhibitor gene (silver): This dominant gene reduces pigment in hairs, creating the silvery or smoky colour variants of tabby coats. One parent must carry this gene for the silver tabby to appear.
- Orange gene: This sex-linked gene causes the well-known orange or red tabby cats. It masks solid colours, so all orange cats visibly express tabby patterns regardless of agouti status.
Beyond these, other genes influence base coat colours such as black, blue, cinnamon, chocolate, and lilac, which combine with tabby patterns to produce the wide range of tabby cat appearances.
Summary Table of Key Tabby Genes and Effects
| Gene | Allele(s) | Effect on Colour / Pattern |
|---|---|---|
| Agouti (A) | A (dominant), a (recessive) | A allows tabby pattern visibility; a/a masks pattern producing solid coat |
| Tabby pattern (Taqpep) | TaM (dominant), Tab (recessive), Sp | TaM = mackerel stripes; Tab = classic swirls; Sp = spotted pattern |
| Melanin inhibitor (I) | I (dominant) | Produces silver/smoke tabby by reducing pigment |
| Orange (O) | Various | Orange cats always display visible tabby pattern |
Responsible Breeding and Caring for Tabby Cats
Understanding the genetics behind tabby patterns helps breeders preserve diversity and avoid health issues associated with irresponsible breeding. Potential cat owners should seek reputable breeders who prioritise health and temperament alongside colour patterns.
Regardless of coat pattern, all cats benefit from regular veterinary care, balanced nutrition, and a stimulating environment for physical and mental wellbeing.
Frequently Asked Question: When can kittens leave their mother?
Quick Answer: Kittens are typically ready to leave their mother at around 12 weeks of age, when they are weaned, vaccinated, and socially developed.
Kittens need their mother's milk and care during the first few weeks of life for essential nutrition and immunity. By 8-12 weeks, most are fully weaned onto solid food, have received initial vaccinations, and begun socialisation. This age range ensures kittens are healthy, behaviourally prepared, and better able to adapt to new homes. Premature separation before 8 weeks is discouraged as it risks health and social development.
If you are looking to find a kitten for sale or adoption, always choose responsible breeders or rescue centres that adhere to recommended rearing practices.
