Yimuphi Umbala Wezinwele Ozoba Nomntanami?

-Delile

• Lapho Ukunqunywa Kombala Wezinwele
• Izakhi zofuzo 101
• Isikhumba
• Izinwele Zengane vs. Izinwele Zabantu Abadala
• Ubu-Albino
• Ukuthatha

Kusukela ngosuku owathola ngalo ukuthi ubulindele, mhlawumbe ubulokhu uphupha ngokuthi ingane yakho ingahle ibukeke kanjani. Ngabe bazoba namehlo akho? Ama-curls womlingani wakho?

Isikhathi kuphela esizosho. Ngombala wezinwele, isayensi ayiqondile kakhulu.

Nalu olunye ulwazi mayelana nezakhi zofuzo eziyisisekelo nezinye izinto ezinquma ukuthi ngabe ingane yakho izoba blonde, brunette, redhead, noma umthunzi othile phakathi.

Lapho Ukunqunywa Kombala Wezinwele

Nayi imibuzo esheshayo ye-pop. Iqiniso noma amanga: Umbala wezinwele wengane yakho usethwe kusukela ekukhulelweni.

Impendulo: Yiqiniso!

Lapho isidoda sihlangana neqanda futhi sikhula sibe yi-zygote, ngokuvamile sithola ama-chromosomes angama-46. Lokho kungu-23 okuvela kubo bobabili umama nobaba. Zonke izici zofuzo zengane yakho - umbala wezinwele, umbala wamehlo, ezocansi, njll - sezivele zikhiyiwe kulesi sigaba sokuqala.

Okuthakazelisa nakakhulu ukuthi isethi ngayinye yama-chromosomes abazali adlulisela ezinganeni zabo ihluke ngokuphelele. Ezinye izingane zingabonakala zifana nomama bazo, kanti ezinye zifana nobaba bazo. Abanye bazobukeka njengokuxubana, ekutholeni inhlanganisela ehlukile yama-chromosomes.

Izakhi zofuzo 101

Ngabe izakhi zofuzo zisebenzisana kahle kanjani ukudala umbala wezinwele? Uhlobo ngalunye lofuzo lwengane yakho lwenziwe ngama-alleles. Ungahle ukhumbule amagama athi "evelele" nethi "ngokweqile" ekilasini lesayensi yesikole sebanga. Ama-alleles aqavile ahlotshaniswa nezinwele ezimnyama, kuyilapho ama-alleles aphindaphindiwe exhunywe kuma-shades afanele.

Lapho izakhi zofuzo zihlangana, inkulumo evelayo i-phenotype ehlukile yengane yakho, noma isici somzimba. Abantu babevame ukucabanga ukuthi uma omunye umzali enezinwele ezimhloshana kanti omunye enezinwele ezinsundu, ngokwesibonelo, i-recessive (blonde) izolahleka bese (i-brown) evelele izowina.

Isayensi inengqondo, kepha ngokwe-Tech Museum of Innovation, okuningi kwalokho esikwaziyo ngombala wezinwele kusesigabeni semfundiso.

Kuvela ukuthi kunemibala eminingi ehlukahlukene ensundu. I-brown-ebony icishe ibe mnyama. I-brown-almond iphakathi nendawo. I-brown-vanilla ngokuyisisekelo i-blonde. Okuningi kwalokho ozokufunda mayelana nezakhi zofuzo kuveza umbala wezinwele njengobalulekile noma oweqisayo. Kepha akulula kangako.

Njengoba kudlalwa ama-alleles amaningi, kukhona amathuba amaningi wombala wezinwele.

Isikhumba

Kungakanani nokuthi hlobo luni lwe-pigment olusezinweleni zomuntu nokuthi lusatshalaliswa kanjani kusiza ukwakha umthunzi ojwayelekile.

Okuthakazelisa nakakhulu ukuthi inani le-pigment ezinweleni zomuntu, ukuminyana kwalo, nokusatshalaliswa kwalo kungashintsha futhi kuguquke ngokuhamba kwesikhathi.

Kunemibala emibili etholakala ezinweleni zomuntu:

• I-Eumelanin ibhekele amathoni ansundu / amnyama.
• I-Pheomelanin inesibopho samathoni abomvu.

Izinwele Zengane vs. Izinwele Zabantu Abadala

Uma uke waphenya ngezithombe zakho ezindala zengane, kungenzeka ukuthi uqaphele ukuthi unezinwele ezilula noma ezimnyama usengumntwana. Kungenzeka kushintshile eminyakeni yakho encane nengane yasenkulisa, futhi. Lesi simo sibuyela kumbala wezinwele.

Ucwaningo olushicilelwe kuForensic Science Communications luqophe umbala wezinwele wezingane ezingama-232 ezimhlophe, eziphakathi neYurophu ePrague. Bathola ukuthi iningi lezingane, abafana namantombazane, lalinezinwele ezimnyama onyakeni wokuqala wokuphila. Kusukela ezinyangeni eziyi-9 kuya eminyakeni engu-2 1/2, umkhuba wombala ukhanyisiwe. Ngemuva kweminyaka yobudala engu-3, ​​umbala wezinwele waba mnyama kancane kancane waze waba neminyaka engu-5.

Lokhu kusho nje ukuthi izinwele zengane yakho zingashintsha imithunzi izikhathi ezimbalwa ngemuva kokuzalwa ngaphambi kokuhlala kumbala onomphela.

Ubu-Albino

Izingane ezizalwe zine-albinism zingase zibe nombala omncane noma zingabi nawo nhlobo izinwele, isikhumba namehlo azo. Lokhu kuphazamiseka kubangelwa ukuguqulwa kwezakhi zofuzo. Kunezinhlobo ezehlukene ze-albinism ezithinta abantu ngezindlela ezahlukene. Abaningi bazalwa ngezinwele ezimhlophe noma ezikhanyayo, kepha uhla lwemibala lungenzeka.

Lesi simo singadala izinkinga zombono nokuzwela kwelanga. Yize ezinye izingane zizalwa zinezinwele ezilula kakhulu ezimhlophe, izingane ezine-albinism ngokuvamile ziba nezinkophe ezimhlophe namashiya.

I-Albinism yisimo esizuzwe njengefa esenzeka lapho bobabili abazali bedlula ekuguqukeni. Uma ukhathazekile ngalesi simo, ungahle uthande ukukhuluma nodokotela wakho noma umeluleki wezofuzo. Ungabelana ngomlando wezokwelapha womndeni wakho bese ubuza noma imiphi eminye imibuzo onayo ngalesi sifo.

Ukuthatha

Ngakho-ke, ingane yakho izoba naziphi izinwele zombala? Impendulo yalo mbuzo ayilula kangako. Njengazo zonke izici zomzimba, umbala wezinwele zengane yakho usuvele unqunyiwe futhi wafakwa amakhodi ku-DNA yawo. Kepha kuzothatha isikhashana ukukhula ngokuphelele emthunzini oqondile ozoba kuwo.