{"id":60850,"date":"2026-10-09T11:51:23","date_gmt":"2026-10-09T11:51:23","guid":{"rendered":"https:\/\/cp.snarskis.lt\/index.php\/2026\/10\/09\/misle-isspresta-po-60-metu-mokslininkai-nustate-kas-genetiskai-pavercia-kates-oranzinemis\/"},"modified":"2026-10-09T11:51:23","modified_gmt":"2026-10-09T11:51:23","slug":"misle-isspresta-po-60-metu-mokslininkai-nustate-kas-genetiskai-pavercia-kates-oranzinemis","status":"publish","type":"post","link":"https:\/\/cp.snarskis.lt\/index.php\/2026\/10\/09\/misle-isspresta-po-60-metu-mokslininkai-nustate-kas-genetiskai-pavercia-kates-oranzinemis\/","title":{"rendered":"M\u012fsl\u0117 i\u0161spr\u0119sta po 60 met\u0173: mokslininkai nustat\u0117, kas geneti\u0161kai paver\u010dia kates oran\u017ein\u0117mis"},"content":{"rendered":"

Kas paai\u0161k\u0117jo apie oran\u017eines kates<\/h2>\n

Oran\u017einis kailis \u2013 vienas atpa\u017e\u012fstamiausi\u0173 ka\u010di\u0173 bruo\u017e\u0173, ta\u010diau jo genetin\u0117 prie\u017eastis ilg\u0105 laik\u0105 i\u0161liko neai\u0161ki. Dabar dvi nepriklausomos mokslinink\u0173 komandos pateik\u0117 sutampan\u010dias i\u0161vadas, kurios paai\u0161kina, kod\u0117l ry\u0161kiai oran\u017ein\u0117 spalva kat\u0117ms pasirei\u0161kia kitaip nei dauguma kit\u0173 \u017einduoli\u0173 kailio spalv\u0173.<\/p>\n

Tyr\u0117jai nustat\u0117, kad oran\u017ein\u0119 spalv\u0105 grei\u010diausiai lemia DNR pokytis ne baltymus koduojan\u010dioje genomo dalyje, susij\u0119s su geno Arhgap36 aktyvumo reguliavimu. Toks pokytis siejamas su gerokai didesniu \u0161io geno aktyvumu tose odos l\u0105stel\u0117se, i\u0161 kuri\u0173 auga oran\u017einiai plaukai.<\/p>\n

Kaip veikia X chromosoma<\/h2>\n

Vienas svarbiausi\u0173 atradimo element\u0173 \u2013 tai, kad pokytis yra X chromosomoje. B\u016btent tai paai\u0161kina seniai pasteb\u0117t\u0105 rei\u0161kin\u012f: dauguma visi\u0161kai oran\u017eini\u0173 ka\u010di\u0173 yra patinai, o patel\u0117ms da\u017eniau pasitaiko margas kailis.<\/p>\n

Patinai turi vien\u0105 X chromosom\u0105, tod\u0117l jei joje yra min\u0117tas genetinis variantas, oran\u017ein\u0117 spalva pasirei\u0161kia visame kailyje. Patel\u0117s turi dvi X chromosomas, o ankstyvoje raidoje kiekvienoje l\u0105stel\u0117je viena j\u0173 atsitiktinai \u201ei\u0161jungiama\u201c, tod\u0117l susidaro skirting\u0173 spalv\u0173 plotai ir atsiranda v\u0117\u017elio kiauto ar trispalviams kat\u0117ms b\u016bdingas ra\u0161tas.<\/p>\n

K\u0105 rodo duomenys ir k\u0105 tai rei\u0161kia<\/h2>\n

Viename i\u0161 tyrim\u0173 genetinis pokytis buvo aptiktas visoms analizuotoms oran\u017ein\u0117ms kat\u0117ms duomen\u0173 rinkinyje, ap\u0117musiame 188 gyv\u016bnus. Tyr\u0117jai taip pat apra\u0161\u0117, kad oran\u017eini\u0173 lop\u0173 srityse Arhgap36 rai\u0161ka buvo daug kart\u0173 didesn\u0117 nei neoran\u017ein\u0117se odos srityse.<\/p>\n

Kita mokslinink\u0173 grup\u0117 pri\u0117jo prie tos pa\u010dios geno krypties ir pateik\u0117 paai\u0161kinim\u0105, kaip didesnis aktyvumas gali keisti pigment\u0173 pusiausvyr\u0105. Supaprastintai, mechanizmas nukreipia pigmentacij\u0105 nuo tamsesni\u0173 eumelanino atspalvi\u0173 link rausvai gelsv\u0173 feomelanino atspalvi\u0173, tod\u0117l kailis tampa oran\u017einis.<\/p>\n

Mokslininkai pabr\u0117\u017eia, kad \u0161is atradimas nepatvirtina populiari\u0173 stereotip\u0173 apie oran\u017eini\u0173 ka\u010di\u0173 elgsen\u0105 ar intelekt\u0105. Turimi duomenys nerodo akivaizd\u017ei\u0173 neigiam\u0173 pasekmi\u0173 sveikatai, o nustatytas poveikis, pana\u0161u, labiausiai susij\u0119s su pigmentines l\u0105steles formuojan\u010diais audiniais.<\/p>\n

Tyrim\u0173 rezultatai publikuoti mokslo \u017eurnale Current Biology. Autori\u0173 teigimu, tai ne tik i\u0161sprend\u017eia sen\u0105 genetikos klausim\u0105, bet ir suteikia daugiau \u017eini\u0173 apie tai, kaip gen\u0173 reguliacija lemia i\u0161vaizdos po\u017eymius bei kod\u0117l vieni j\u0173 pasiskirsto skirtingai tarp ly\u010di\u0173.<\/p>\n","protected":false},"excerpt":{"rendered":"

Po daugiau nei 60 met\u0173 paai\u0161k\u0117jo, kokia genetin\u0117 prie\u017eastis lemia oran\u017ein\u012f ka\u010di\u0173 kail\u012f ir kod\u0117l jis da\u017eniau pasitaiko patinams nei patel\u0117ms.<\/p>\n","protected":false},"author":0,"featured_media":60851,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[10],"tags":[46448,9764,2239,1980,40567,37000],"miestas":[],"class_list":["post-60850","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mokslas","tag-arhgap36","tag-current-biology","tag-genetika","tag-kates","tag-pigmentai","tag-x-chromosoma"],"acf":[],"_links":{"self":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/posts\/60850","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/comments?post=60850"}],"version-history":[{"count":0,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/posts\/60850\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/media\/60851"}],"wp:attachment":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/media?parent=60850"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/categories?post=60850"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/tags?post=60850"},{"taxonomy":"miestas","embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/miestas?post=60850"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}