Obama’s nose leather does not have a dark outline which means he is non-agouti (to be confirmed by DNA test) and he should be solid coloured, but he has a very clear, bright classic tabby pattern of mahogany brown on a greyish background. According to Irina Shustrova, Olga Sinitsa and Svetlana Ponomareva this Gold colour is a new mutation of locus E. DNA tests by Zoogen show he does not carry Carnelian/Serdolic (seen in Kurilian) or Amber (seen in Norwegian Forest Cat only). Obama Iz Doma Yahontoff *RU is described as blue ‘amber’ gold. She is waiting to see how the others develop. Two kittens out of 8 were born just gold (blue gold classic tabby and black gold classic tabby) and two ‘amber’ (inverted commas because Amber is found in Norwegian Forest Cats only). Obama Iz Doma Yahontoff *RU was born to female golden Maine Coon Caramel (Karamel Sanatacun) who does not carry amber, chocolate or cinnamon (DNA tested by Zoogen) and male black smoke Maine Coon called Ice. Natalia Yakhontova ( Doma Yahontoff Maine Coons) had a pseudo-cinnamon born in her golden Maine Coon breeding programme. The blue undertone is the unknown factor that might be a novel mutation tht modifies the base colour of red. Non-agouti red usually shows ghost markings, but not on a blue background. He carries colourpoint and blue dilution. It's as though the red gene doesn't fully suppress the expression of eumelanin. He is not chocolate or cinnamon (alleles of black), despite the visual appearance. As he is not black, he must be genetically red. Howeve Oliver DNA tests as B/B and non-agouti meaning he should be self black (if no O gene is present) or self red (if the O gene is also present). It definitely looks much more brown than a normal red tabby and resembles the cinnamon colour (a recessive allele of Black i.e. He then darkened as he has got older and to a deeper orange brown colour which has a slight bluish undertone. He started off as a dark orange tabby feral/stray kitten caught in a squirrel trap when he was about six weeks old in Winnipeg. Here are some photos of an unusually coloured 11-month-old household pet called Oliver (owned by Jill Bristow) shown in ACFA in Canada in 2015. The markings look like blue colour points-they cover the ginger fur on his extremities. With no official term for this colour/pattern, and with people passing him by because of it, the information sheet at the shelter said he was a “very rare silver-cream tabby.” Hannah’s vet has also never seen a cat with this coloration before. Nobody wanted to adopt him because he looked so dirty and because he tended to stare at people in an uncanny way. Hannah obtained Gingerbits in November 2018, and the shelter he came had tried to wash him because they thought the blue areas were due to grime. In July 2019, Hannah in the USA sent my photos of her 2-year-old cat, Gingerbits – GB for short, who has a very prominent red-on-blue/blue-ginger tabby pattern. Because the bluish hue is retricted to the extremities (points) it may be affected by temperature, as those regions are cooler than the cat's torso. In red or cream cats (the red/cream colour is due to phaeomelanin) the bluish effect may be due to such genes causing some eumelanin to be expressed. In silver cats, there is sometimes a golden "tarnish" on the muzzle. In black/brown tabby cats, polygenes are known to affect the background colour, sometimes warming (brightening) it and sometimes "cooling" it. Tosca, a solid red female shows really clear bluish hues while the red-and-white bicolour housecat shows the blue tailtip really well and the lighter part of his tabby pattern also looks a bit grey. In many cases, kittens with bluish extremities turned fully red as they grew older, but some adult cats still retain the blue/grey hue. Marjan Boonen, a breeder in The Netherlands, has noticed that red cats sometimes have a bluish hue on their extremities: tail, feet, muzzles and ears. (photos copyright of individual photographers)Ĭolours can be modified by numerous genes (known as polygenes) which creates warmer or cooler tones.
0 kommentar(er)
