Pehea ka maʻamau o ka poʻe me ka lauoho ʻulaʻula a me nā maka polū?

Anter

• Pehea e loaʻa ai i kekahi ka lauoho ʻulaʻula a me nā maka polū
• He aha nā kola e kumu ai ka lauoho ʻulaʻula?
• E pau paha ka lauoho ʻulaʻula, maka uliuli?
• ʻO ka lauoho ʻulaʻula, nā maka polū i nā wahine me nā kāne
• ʻO ka lauoho ʻulaʻula, nā maka polū, a me ka lima hema

Hōʻike Overview

I ke ʻano o nā kala lauoho kūlohelohe hiki, nā hue ʻeleʻele ka mea maʻamau - ʻoi aku ma mua o 90 pākēneka o ka poʻe ma ka honua holoʻokoʻa he lauoho ʻeleʻele a ʻeleʻele paha. Hahai ʻia e ka lauoho lauoho.

ʻO ka lauoho ʻulaʻula, kahi hanana o ka heluna kanaka wale nō, ka mea liʻiliʻi loa. Kūleʻa like ʻole nā ​​maka polū, a ʻano rarer paha lākou.

Ua ʻike ʻia kahi noiʻi ma waena o 1899 a me 1905, ʻoi aku i ka hapalua o ka poʻe keʻokeʻo ʻole Hispanic i ʻAmelika Hui Pū ʻIa i loaʻa nā maka polū. Akā mai 1936 a 1951, ua heleleʻi kēlā helu i 33.8 pakeneka. I kēia lā, manaʻo nā manaʻo e pili ana i ka 17 pākēneka o ka poʻe ma ka honua holoʻokoʻa i nā maka polū.

ʻO kou lauoho lauoho a me kou kala maka e iho i lalo i nā gen āu e hoʻoilina ai mai kou mau mākua mai. Inā loaʻa i kekahi kanaka ka lauoho ʻulaʻula a me nā maka polū, aia kahi manawa kūpono e hana ai kekahi a ʻelua paha o ko lākou mau mākua, akā ʻaʻole mau.

Pono ʻoe e hoʻoilina i ʻelua mau ʻikepili o ka moʻokūʻauhau no ka kala o kou lauoho a me ka kala o kou maka i loaʻa i kēia mau ʻano liʻiliʻi. Kākaʻikahi ka likelike o kēia hana ʻana, keu hoʻi inā ʻaʻole ʻulaʻula ka lauoho a me nā maka polū o kekahi o kou mau mākua.I kekahi manawa naʻe, kaulike nā hōkū genetic, a hānau ʻia kēlā me kēia kanaka me ka hui laha ʻole o ka lauoho ʻulaʻula a me nā maka polū.

Pehea e loaʻa ai i kekahi ka lauoho ʻulaʻula a me nā maka polū

Hāʻule nā ​​ʻano Gene i ʻelua mau ʻāpana: recessive a me ka mana. Māhele nā ​​mākua i ka blueprint o nā hiʻohiʻona he nui, mai ke kala o ka lauoho i ke ʻano pilikino, i kā lākou ʻāpana.

ʻOiai hoʻohuli ʻia ke kala o ka lauoho e nā ʻāpana he nui, ma ka laulā, lanakila nā genes mana i ka matchup head to head e kūʻē i nā genes recessive. ʻO ka lauoho lauoho a me nā maka ʻeleʻele, ʻo kahi laʻana, he mana nui lāua, ʻo ia ke kumu e hana ai lākou i kahi pākēneka nui o nā hui kala ʻana o ka lauoho-maka.

Hiki i nā mākua ke lawe i nā genes recessive. ʻOiai lākou e hōʻike i nā genes koʻikoʻi, aia nō iā lākou - a hiki ke hele i kā lākou keiki - nā genes recessive. ʻO kahi laʻana, hiki i nā mākua lauoho ʻeleʻele, ʻeleʻele maka, ke loaʻa i kahi keiki me ka lauoho lauoho a me nā maka polū.

Hiki i nā mākua ʻelua ke hōʻike i nā ʻano genes recessive, a hiki iā lākou ke hāʻawi i kēlā i kā lākou keiki. ʻO kahi laʻana, inā ʻulaʻula ka lauoho o nā mākua, loaʻa i kahi keiki ka ʻike genetika no ka lauoho ʻulaʻula, no laila ʻo ka manawa e loaʻa iā lākou ka lauoho ʻulaʻula aneane 100 pākēneka.

Inā ʻulaʻula kekahi makua a ʻaʻole ʻo kekahi, ʻo ka manawa e loaʻa ai i kā lākou keiki ka lauoho ʻulaʻula ma kahi o 50 pākēneka, ʻoiai ke ʻokoʻa loa ke aka o ka ʻulaʻula.

ʻO ka mea hope loa, inā ʻo nā mākua ʻelua nā mea lawe i ka ʻokoʻa ʻokoʻa akā ʻaʻohe o lākou lauoho ʻulaʻula, aia i ke keiki ma kahi o 1 i ka 4 manawa o ka loaʻa ʻana o ka lauoho ʻulaʻula maoli. ʻO ke kumu maoli o ka hoʻoilina o ke kala o ka lauoho ʻoi aku ka paʻakikī, akā, no ka mea, he nui nā genes i pili.

He aha nā kola e kumu ai ka lauoho ʻulaʻula?

ʻO nā melanocytes he mau melanin e hana ana i kou ʻili. ʻO ka nui a me ke ʻano o ka melanin e hana ai i kou kino e hoʻoholo ai i ka pouli a i ʻole ka mālamalama o kou ʻili. ʻO ka lauoho ʻulaʻula ka hopena o kahi ʻano genetical e kumu ai i nā huna o ka ʻili o ke kino a me nā hunaola lauoho e hana i nā mea hou aku i hoʻokahi ʻano melanin a ʻoi aku ka liʻiliʻi o kekahi.

Loaʻa ka hapa nui o nā ʻulaʻula i ka hoʻololi ʻana o ka ʻāpana i ka melanocortin 1 receptor (MC1R). Ke hoʻopau ʻole ʻia ʻo MC1R, hana ke kino i nā pheomelanin hou aʻe, ʻo ia ke kuleana no ka ʻulaʻula a me nā kani lauoho, ma mua o eumelanin, ʻo ia ke kuleana no nā aka o ka ʻeleʻele a me ka ʻeleʻele. I ka poʻe me MC1R i hoʻoheheʻe ʻia, hiki i ka eumelanin ke kaulike i ka pheomelanin, akā i nā ʻulaʻula, pale ka ʻano ʻokoʻa i kēlā.

Inā loaʻa iā ʻoe kekahi a i ʻole ʻelua kope kope MC1R hiki ʻole ke hoʻoholo i ka malu o ka lauoho ʻulaʻula āu, mai ka strawberry blonde a hohonu auburn a i ka ʻulaʻula ʻulaʻula. ʻO kēia kuleana no nā freckles i nā ʻulaʻula ʻulaʻula.

E pau paha ka lauoho ʻulaʻula, maka uliuli?

Manaʻoʻiʻo paha ʻoe no ka laha ʻole o kēia mau ʻano kūlohelohe, hiki ke hoʻopau ʻia i waho o ka loko wai. ʻAʻole paha e hiki ana kēlā. ʻOiai ʻaʻole hiki iā ʻoe ke ʻike i nā ʻano recessive - ka lauoho ʻulaʻula, no ka laʻana - aia nō lākou ma laila, e peʻe ana i nā chromosome o ke kanaka.

Ke loaʻa i kahi keiki kahi keiki, hiki iā lākou ke hāʻawi i kā lākou ʻike gen recessive i kā lākou keiki, a hiki ke lanakila i ke ʻano. ʻO ia ke kumu e hiki ai i kahi mea e like me ka lauoho ʻulaʻula a i ʻole nā ​​maka polū ke "hōʻalo" i nā hanauna a hōʻike i kekahi mau ʻanuʻu i lalo i ka laina ʻohana.

ʻO ka lauoho ʻulaʻula, nā maka polū i nā wahine me nā kāne

ʻOi aku ka maʻamau o ka lauoho ʻulaʻula i nā wahine, e like me. Eia nō naʻe, ʻoi aku ka maka o nā kāne Caucasian ma mua o nā wahine, nā hōʻike. No ka hui pū ʻana o ka lauoho ʻulaʻula a me nā maka polū, ua nānā iki ka noiʻi e pili ana i ka moekolohe e hoʻomohala i kēia combo ʻano maʻamau.

ʻO ka lauoho ʻulaʻula, nā maka polū, a me ka lima hema

ʻIke ka ʻulaʻula i ko lākou kala lauoho ʻaʻole ia he mea kū hoʻokahi. ʻO ka ʻoiaʻiʻo, loaʻa i nā ʻulaʻula kekahi mau ʻano laha ʻole ʻē aʻe.

Wahi a ka palena palena paha e waiho lima ʻulaʻula paha. E like me ka lauoho ʻulaʻula, lima hema ka ʻano recessive. Ma ke komohana kai komohana, 10 i ka 15 pākēneka o ka poʻe e hoʻohana nui ana i ko lākou lima hema.

Manaʻo ʻia ʻo Redheads e maʻalahi i ka ʻeha, hōʻike pū kekahi. Hoʻohui, ʻoi aku paha lākou i ka anesthetic i ka wā o ke ʻoki a me ka anesthesia kūloko.

ʻOiai hānau ʻia nā ʻulaʻula i ka honua holoʻokoʻa, e hōʻiliʻili paha lākou i ka hemisphere ʻĀkau. ʻOiai ma kahi o 1-2% o ka heluna heluna nui o ka honua i ka ʻāpana lauoho ʻulaʻula, piʻi kēlā pākēneka i ke kūkulu ʻākau o ka equator.