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Ma haystaa cat cad oo Dhago Beeleen?

Sida la og yahay, ee dabiiciga ah, gaar ahaan duurjoogta, midabka cad ee xayawaanka waa mid aad u dhif ah. marka laga reebo laga yaabaa inay tahay in dadka deggan ee latitudes kala horjeeda, halkaas oo midabka waxaa la soo saaray iyada oo doorashada dabiiciga ah in ka badan qarniyo badan. Laakiin cat ka soo Africa yimaadeen, oo waxay ahaayeen asal ahaan brown. Dhogortu waa bunni noqday ilaalinta qoraxda kulaylka, iyo sidoo kale daboolidda si aamusnaan dhuumaaleysi up on saarka aad ugu qarin bahal weyn. Sidee, ka dibna, noolaanayn cat cad?

Mararka qaarkood xitaa ka mid ah rooks madow ku dhashay chicks si buuxda oo cad. Oo xataa ka mid ah dadka (ay ka mid yihiin kiiyoo) laga helay dadka aad maqaarka cad, waayo timo cad cad u eg oo ah indhaha guduudan oo midab. Tani waxay ifafaale waxaa loo yaqaan wada cadyahay. Dhab ahaantii, ma aha midab ah saan cad, iyo la'aanta oo dhan. In maqaarka, timaha iyo ka iris ee isha ku jira xayawaan ah melanin aadka u abaabulan - walax ka ilaaliya jidhka ka shucaaca qoraxda iyo waxa midabayn ee madow. The wakiillo ka socda tartanka Negroid of enzyme tani waa dheeraad ah, ee jinsiyadaha waqooyiga Yurub - yar, oo ay gabi ahaanba saan ma. The dambe oo ka mid ah cat cad.

Laakiin haddii duurka, shaqsiyaadka sida marar badan hore u dhintaan, iyagoo aan farcankaaga, xayawaanka nasiib dareen this. midab aan caadi ahayn qiimeeyeen wakhtigii qadiimiga Masar, halkaas oo waxaa loo tixgeliyaa inay calaamad u ah khayroon daahirnimo iyo daahirsanaanta. Dadka si taxadar leh kaymo, hiddo horeba xukuma ee jirkoodu wada cadyahay. Haddaba cat cad waa mid aad wax ku oolka ah, iyo heerarka horumartay in gooyo qayb ka mid ah tartamada of beige iftiinka, iyo lacagta, iyo bisadaha Boora cirro. Ogol yahay oo kaliya cokan caddaan baraf cad oo siman leh midabo kala lahayn, iyo sidoo kale baro multi-midab. The kaliya ee ka reeban yihiin kittens, kaas oo ay leeyihiin waxaa laga yaabaa in dhibco yaryar oo ku yaal madaxa - da'da ah, waa in ay baaba'aan.

Xayawaanka la copper ama orange indhaha (Copper Eyed White), inkastoo midabka baraf, ka yar u nugul dhago la'aan, laakiin bisad la caddaan doonaan indhaha kala duwan (Odd Eyed White, la yaab indhaha), ay u badan tahay waxay yeelan doonaan dhibaato maqalka yar. Waa laga yaabaa in mid dhaga la, laakiin

hal dheg, ama maqalku ku adag yahay. Si kastaba ha ahaatee, mana midabka joog ah oo caano ah ama indhaha buluuga ah aan weli tilmaame kama dambaysta ah in xayawaanka - maqlaan. Laakiin haddii ay tahay cabsi, marka aad soo laabto oo uu taaban, ka dibna ay jirto sabab walaac. Ka mid ah kuwan xayawaanka jecel yahay meel gaar ah waxaa loo heystey cat cad indhaha buluuga (Blue Eyed White). Waxay - ma saan dhamaystiran: jirkeeda waa la joogo in qadar yar oo ah melanin, taas oo midabo kala lakabyada hoose ee iris madow iyo maqnaanshaha walax this ee layers sare abuuraa saamaynta madoobaad. The xayawaanka ugu qiimeeyeen la ah oo aad u daran, indhaha buluuga ah. Nasiib darro, oo ku saabsan 20% ka mid ah dhagaxa weyn Blue Eyed White dhaga la dhashay. Responsible iyo W hiddo xukuma epistatic, taas oo uu aado "gacanta ee gacanta" la midabka samadu waayo.

cat White u baahan yahay daryeel gaar ah taxaddar, xataa haddii wanaagsan iyada dhagaysiga. Waa midda koowaade, jaakad tani waa mid aad u fudud u saxaroodaan. Marka labaad, ku saabsan asalka cad loo arki karaa dhegaha gaar wasakh iyo indhaha xumeeyay. Saddexaad, hiddo-wada cadyahay oo ka dhigaysa xoolaha kuwanu waa kuwo aad u nugul in ay shucaaca qoraxda. Melanin ilaaliya maqaarka iyo ma bisad ka heli kartaa gubto ah, laakiin haddii ay marar badan dhici doona, iyo kansarka maqaarka.

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