[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.artpap.cz\/jakou-barvu-maji-skutecne-zebry\/#Article","mainEntityOfPage":"https:\/\/www.artpap.cz\/jakou-barvu-maji-skutecne-zebry\/","headline":"Jakou barvu maj\u00ed skute\u010dn\u011b zebry","name":"Jakou barvu maj\u00ed skute\u010dn\u011b zebry","description":"Jednou z\u00a0v\u011bc\u00ed, kter\u00e9 zaj\u00edmaj\u00ed nejen d\u011bti, je mimo jin\u00e9 tak\u00e9 ot\u00e1zka, jak\u00e9 zbarven\u00ed m\u00e1 vlastn\u011b zebra. V\u011bt\u0161ina z\u00a0n\u00e1s podv\u011bdom\u011b p\u0159edpokl\u00e1d\u00e1, \u017ee se jedn\u00e1 o b\u00edlou barvu s\u00a0\u010dern\u00fdmi pruhy. Je to proto, \u017ee b\u00edlou m\u00e1me asociov\u00e1nu s\u00a0\u010distotou, p\u0159i\u010dem\u017e s\u00a0\u010dernou je to naopak. Ov\u0161em je jasn\u00e9, \u017ee na\u0161e p\u0159edpoklady nemus\u00ed ani zdaleka odpov\u00eddat skute\u010dnosti. \u00a0 Kone\u010dnou odpov\u011b\u010f […]","datePublished":"2023-09-28","dateModified":"2023-09-28","author":{"@type":"Person","@id":"https:\/\/www.artpap.cz\/author\/#Person","name":"","url":"https:\/\/www.artpap.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/9bd672608a9ea50cfcb35956b7f63dacf48dece49eb907e6bdd72bedd9991f24?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/9bd672608a9ea50cfcb35956b7f63dacf48dece49eb907e6bdd72bedd9991f24?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"artpap.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.artpap.cz\/wp-content\/uploads\/zebra1.jpg","url":"https:\/\/www.artpap.cz\/wp-content\/uploads\/zebra1.jpg","height":0,"width":0},"url":"https:\/\/www.artpap.cz\/jakou-barvu-maji-skutecne-zebry\/","about":["Zv\u00ed\u0159ata"],"wordCount":423,"articleBody":"Jednou z\u00a0v\u011bc\u00ed, kter\u00e9 zaj\u00edmaj\u00ed nejen d\u011bti, je mimo jin\u00e9 tak\u00e9 ot\u00e1zka, jak\u00e9 zbarven\u00ed m\u00e1 vlastn\u011b zebra. V\u011bt\u0161ina z\u00a0n\u00e1s podv\u011bdom\u011b p\u0159edpokl\u00e1d\u00e1, \u017ee se jedn\u00e1 o b\u00edlou barvu s\u00a0\u010dern\u00fdmi pruhy. Je to proto, \u017ee b\u00edlou m\u00e1me asociov\u00e1nu s\u00a0\u010distotou, p\u0159i\u010dem\u017e s\u00a0\u010dernou je to naopak. Ov\u0161em je jasn\u00e9, \u017ee na\u0161e p\u0159edpoklady nemus\u00ed ani zdaleka odpov\u00eddat skute\u010dnosti.\u00a0Kone\u010dnou odpov\u011b\u010f n\u00e1m m\u016f\u017ee d\u00e1t genetika. M\u016f\u017eeme analyzovat genotyp mnoha t\u011bchto zv\u00ed\u0159at, a to jak t\u011bch ze zoologick\u00fdch. To bylo tak\u00e9 provedeno, a v\u00fdsledky byly pom\u011brn\u011b p\u0159ekvapiv\u00e9. Uk\u00e1zalo se toti\u017e, \u017ee odpov\u011b\u010f je pom\u011brn\u011b jasn\u00e1.\u00a0\u00a0Ta byla d\u00e1le potvrzena tak\u00e9 anal\u00fdzou chlup\u016f a k\u016f\u017ee, kdy se vzaly ko\u017en\u00ed folikuly i chlupov\u00e9 v\u00e1\u010dky a byly podrobeny kompletn\u00ed anal\u00fdze na p\u0159\u00edtomnost \u010di nep\u0159\u00edtomnost ur\u010dit\u00fdch barevn\u00fdch marker\u016f. Podle nich se d\u00e1 ur\u010dit, kter\u00e1 barva je ta p\u016fvodn\u00ed.\u00a0V\u00fdsledkem bylo zji\u0161t\u011bn\u00ed, \u017ee z\u00e1kladn\u00ed barva zebry je \u010dern\u00e1. B\u00edl\u00e9 pruhy jsou pak zp\u016fsobeny t\u00edm, \u017ee v\u00a0dan\u00fdch p\u00e1sech byl genem zablokov\u00e1n v\u00fdskyt melaninu, kter\u00fd je zodpov\u011bdn\u00fd za tmav\u00e9 zbarven\u00ed jak k\u016f\u017ee, tak i srsti. To je ostatn\u011b tak\u00e9 d\u016fvod, pro\u010d je neosrst\u011bn\u00fd \u010denich zebry \u010dern\u00fd.\u00a0\u00a0D\u00e1v\u00e1 to smysl i z\u00a0evolu\u010dn\u00edho hlediska \u2013 \u010dist\u011b b\u00edl\u00e9 zv\u00ed\u0159e je mnohem n\u00e1padn\u011bj\u0161\u00ed ne\u017e to \u010dern\u00e9. A vzhledem k\u00a0tomu, \u017ee zebry se cht\u011bj\u00ed pred\u00e1tor\u016fm vyhnout, je jasn\u00e9, \u017ee nejprve byly cel\u00e9 \u010dern\u00e9, p\u0159i\u010dem\u017e b\u00edl\u00e9 pruhy se objevily a\u017e pozd\u011bji, kdy\u017e se vyvinulo st\u00e1dn\u00ed chov\u00e1n\u00ed a uk\u00e1zalo se, \u017ee \u010dernob\u00edl\u00e9 zbarven\u00ed p\u0159in\u00e1\u0161\u00ed v\u011bt\u0161\u00ed v\u00fdhody ne\u017e nev\u00fdhody.\u00a0Je tedy jasn\u00e9, \u017ee touto ot\u00e1zkou se ji\u017e nemus\u00edme zab\u00fdvat, nebo\u0165 je vy\u0159e\u0161ena s\u00a0kone\u010dnou platnost\u00ed. To v\u0161ak samoz\u0159ejm\u011b neznamen\u00e1, \u017ee m\u00e1me v\u0161echny odpov\u011bdi. Nap\u0159\u00edklad nev\u00edme, kdy p\u0159esn\u011b se pruhy u zeber vyvinuly a jak tento v\u00fdvoj prob\u00edhal. To je v\u0161ak na del\u0161\u00ed v\u00fdzkum, kter\u00fd je st\u00e1le prov\u00e1d\u011bn. Nen\u00ed v\u0161ak tak jednoduch\u00fd, nebo\u0165 n\u00e1m chyb\u00ed fosiln\u00ed \u010di jin\u00e9 archeologick\u00e9 n\u00e1lezy. Jej\u00ed vy\u0159e\u0161en\u00ed by v\u0161ak mohlo pomoci poodkr\u00fdt dal\u0161\u00ed z\u00e1hadu v\u00a0tom, jak evoluce vlastn\u011b pracuje.\u00a0                                                                                                                                                                                                                                                                                                                                                                                                "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Jakou barvu maj\u00ed skute\u010dn\u011b zebry","item":"https:\/\/www.artpap.cz\/jakou-barvu-maji-skutecne-zebry\/#breadcrumbitem"}]}]