{"id":44,"date":"2026-03-08T17:25:58","date_gmt":"2026-03-08T16:25:58","guid":{"rendered":"https:\/\/brilove.com\/?p=44"},"modified":"2026-03-17T09:16:21","modified_gmt":"2026-03-17T08:16:21","slug":"the-genetics-of-colour-in-the-british-shorthair","status":"publish","type":"post","link":"https:\/\/brilove.com\/en\/genetica-dei-colori-nel-british-shorthair\/","title":{"rendered":"Coat Colour Genetics in British Shorthairs"},"content":{"rendered":"<h2>British Shorthair Coat Colour Genetics: Blue, Lilac, Blue-Cream (Tortie) and Bicolour<\/h2>\n<p style=\"font-weight: 400;\">When choosing a British Shorthair kitten, one of the most common questions is:<\/p>\n<h3 style=\"font-weight: 400;\"><strong>\u201cWhat colours could this pairing produce?\u201d<\/strong><\/h3>\n<p style=\"font-weight: 400;\">At La Bella Vita Cattery, we mainly breed:<\/p>\n<ul style=\"font-weight: 400;\">\n<li><strong>Blue<\/strong><\/li>\n<li><strong>Lilac<\/strong><\/li>\n<li><strong>Blue-Cream (Tortie)<\/strong><\/li>\n<li><strong>Bicolour<\/strong><\/li>\n<\/ul>\n<p style=\"font-weight: 400;\">This article offers a straightforward explanation of <strong>coat colour genetics in British Shorthairs<\/strong>, helping you understand how these beautiful variations arise.<\/p>\n<h3 style=\"font-weight: 400;\"><strong>Blue British Shorthair<\/strong><\/h3>\n<p style=\"font-weight: 400;\">The <strong>Blue<\/strong> coat is the breed\u2019s most iconic.<\/p>\n<p style=\"font-weight: 400;\">Genetically, it is <strong>dilute black<\/strong>.<br \/>\nThis means the cat has a gene known as \u201cdilution\u201d, which turns black into an elegant, even grey.<\/p>\n<p style=\"font-weight: 400;\">If both parents are blue, their kittens will be blue.<br \/>\nIf a parent carries a \u201chidden\u201d gene, such as chocolate, other colours may also be possible.<\/p>\n<h3 style=\"font-weight: 400;\"><strong>Lilac British Shorthair<\/strong><\/h3>\n<p style=\"font-weight: 400;\">The <strong>Lilac<\/strong> coat has a pale, delicate shade with pinkish undertones.<\/p>\n<p style=\"font-weight: 400;\">It occurs when:<\/p>\n<ul style=\"font-weight: 400;\">\n<li>The base colour is <strong>chocolate<\/strong><\/li>\n<li>The cat carries the gene for <strong>dilution<\/strong><\/li>\n<\/ul>\n<p style=\"font-weight: 400;\">For a kitten to be lilac:<\/p>\n<ul style=\"font-weight: 400;\">\n<li>both parents must pass on the chocolate allele<\/li>\n<li>both must pass on the dilution allele<\/li>\n<\/ul>\n<p style=\"font-weight: 400;\">If both parents are lilac, their kittens will be lilac.<br \/>\nIf one parent is blue and the other lilac, the kittens may be blue or lilac, depending on the genes carried by the blue parent.<\/p>\n<h3 style=\"font-weight: 400;\"><strong>Blue-Cream (Tortie) British Shorthair<\/strong><\/h3>\n<p style=\"font-weight: 400;\">The <strong>Blue-Cream<\/strong>, also known as <strong>dilute tortie<\/strong>, is a female cat with a coat of mingled blue and cream.<\/p>\n<p style=\"font-weight: 400;\">Important:<br \/>\nA tortie <strong>has no white<\/strong>.<br \/>\nIf white is present, the colour is described as <strong>tortie bicolour<\/strong>, which is a different combination.<\/p>\n<p style=\"font-weight: 400;\">Blue-cream colouring occurs because cream (dilute red) is sex-linked.<br \/>\nThis is why:<\/p>\n<ul style=\"font-weight: 400;\">\n<li>Torties are almost always <strong>females<\/strong><\/li>\n<li>Male torties are extremely rare<\/li>\n<\/ul>\n<p style=\"font-weight: 400;\"><strong>If the mother is blue-cream:<\/strong><\/p>\n<p style=\"font-weight: 400;\"><strong>Males<\/strong><\/p>\n<ul style=\"font-weight: 400;\">\n<li>Blue<\/li>\n<li>Cream<\/li>\n<\/ul>\n<p style=\"font-weight: 400;\"><strong>Females<\/strong><\/p>\n<ul style=\"font-weight: 400;\">\n<li>Blue<\/li>\n<li>Blue-Cream<\/li>\n<\/ul>\n<p style=\"font-weight: 400;\">This is one of the most interesting pairings from a genetic perspective.<\/p>\n<h3 style=\"font-weight: 400;\"><strong>Bicolour British Shorthair<\/strong><\/h3>\n<p style=\"font-weight: 400;\">The <strong>Bicolour<\/strong> pattern is not a base colour; it reflects the presence of the <strong>white-spotting gene<\/strong>.<\/p>\n<p style=\"font-weight: 400;\">It can be:<\/p>\n<ul style=\"font-weight: 400;\">\n<li>Blue Bicolour<\/li>\n<li>Lilac Bicolour<\/li>\n<li>Blue-Cream Bicolour<\/li>\n<\/ul>\n<p style=\"font-weight: 400;\">White is \u201cadded\u201d to the main coat colour.<\/p>\n<p style=\"font-weight: 400;\">If one parent is bicolour, some kittens may have white markings.<br \/>\nIf both parents are bicolour, the likelihood increases.<\/p>\n<h3 style=\"font-weight: 400;\"><strong>Simple Examples of Breeding Pairs<\/strong><\/h3>\n<p style=\"font-weight: 400;\">Here are the most common pairings in our cattery:<\/p>\n<h4 style=\"font-weight: 400;\"><strong>Blue \u00d7 Blue<\/strong><\/h4>\n<p style=\"font-weight: 400;\">Kittens:<\/p>\n<ul style=\"font-weight: 400;\">\n<li>Males \u2192 Blue<\/li>\n<li>Females \u2192 Blue<\/li>\n<\/ul>\n<p style=\"font-weight: 400;\">100% Blue<\/p>\n<h4 style=\"font-weight: 400;\"><strong>Blue \u00d7 <\/strong><strong>Blue-Cream<\/strong><\/h4>\n<p style=\"font-weight: 400;\">Kittens:<\/p>\n<ul style=\"font-weight: 400;\">\n<li>Males \u2192 Blue or Cream<\/li>\n<li>Females \u2192 Blue or Blue-Cream<\/li>\n<\/ul>\n<h4 style=\"font-weight: 400;\"><strong>Lilac \u00d7 Lilac<\/strong><\/h4>\n<p style=\"font-weight: 400;\">Kittens:<\/p>\n<ul style=\"font-weight: 400;\">\n<li>Males \u2192 Lilac<\/li>\n<li>Females \u2192 Lilac<\/li>\n<\/ul>\n<p style=\"font-weight: 400;\">100% Lilac<\/p>\n<h4 style=\"font-weight: 400;\"><strong>Blue \u00d7 <\/strong><strong>Lilac<\/strong><\/h4>\n<p style=\"font-weight: 400;\">Kittens:<\/p>\n<ul style=\"font-weight: 400;\">\n<li>Blue<\/li>\n<li>Lilac (only if the blue parent carries chocolate)<\/li>\n<\/ul>\n<h4 style=\"font-weight: 400;\"><strong>Blue Bicolour \u00d7 Lilac<\/strong><\/h4>\n<p style=\"font-weight: 400;\">Kittens:<\/p>\n<ul style=\"font-weight: 400;\">\n<li>Blue or Lilac<\/li>\n<li>With or without white<\/li>\n<\/ul>\n<h3 style=\"font-weight: 400;\"><strong>Why Can\u2019t Every Outcome Be Predicted with Certainty?<\/strong><\/h3>\n<p style=\"font-weight: 400;\">Any cat may be <strong>a carrier of genes that are not expressed in its coat<\/strong>.<br \/>\nThese genes may be expressed in the kittens even when they are not visible in the parents.<\/p>\n<p style=\"font-weight: 400;\">That is why a responsible cattery:<\/p>\n<ul style=\"font-weight: 400;\">\n<li>Studies bloodlines<\/li>\n<li>Analyses pedigrees<\/li>\n<li>Plans pairings carefully<\/li>\n<li>Puts health before colour<\/li>\n<\/ul>\n<h3 style=\"font-weight: 400;\"><strong>Colour Matters, but Health Comes First<\/strong><\/h3>\n<p style=\"font-weight: 400;\">Coat colour genetics in British Shorthairs is fascinating, but it is only one factor to consider.<\/p>\n<p style=\"font-weight: 400;\">Above all, a kitten should be:<\/p>\n<ul style=\"font-weight: 400;\">\n<li>Healthy<\/li>\n<li>Well socialised<\/li>\n<li>Even-tempered<\/li>\n<li>True to the breed standard<\/li>\n<\/ul>\n<p style=\"font-weight: 400;\">If you would like to know which colours are available in our litters or learn more about genetic combinations, La Bella Vita Cattery is always happy to answer your questions openly and enthusiastically.<\/p>","protected":false},"excerpt":{"rendered":"<p>Genetica dei Colori nel British Shorthair: Blue, Lilac, Blue-Cream (Tortie) e Bicolore Quando si sceglie un cucciolo di British Shorthair, una delle domande pi\u00f9 frequenti \u00e8: \u201cChe colori possono nascere da questo accoppiamento?\u201d Nell\u2019Allevamento Della Bella Vita alleviamo principalmente: Blue Lilac Blue-Cream (Tortie) Bicolore In questo articolo spieghiamo in modo semplice come funziona la genetica [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":269,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-44","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-gatti-e-dintorni"],"_links":{"self":[{"href":"https:\/\/brilove.com\/en\/wp-json\/wp\/v2\/posts\/44","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/brilove.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/brilove.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/brilove.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/brilove.com\/en\/wp-json\/wp\/v2\/comments?post=44"}],"version-history":[{"count":6,"href":"https:\/\/brilove.com\/en\/wp-json\/wp\/v2\/posts\/44\/revisions"}],"predecessor-version":[{"id":413,"href":"https:\/\/brilove.com\/en\/wp-json\/wp\/v2\/posts\/44\/revisions\/413"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/brilove.com\/en\/wp-json\/wp\/v2\/media\/269"}],"wp:attachment":[{"href":"https:\/\/brilove.com\/en\/wp-json\/wp\/v2\/media?parent=44"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/brilove.com\/en\/wp-json\/wp\/v2\/categories?post=44"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/brilove.com\/en\/wp-json\/wp\/v2\/tags?post=44"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}