2024 Tus sau: Priscilla Miln | [email protected]. Kawg hloov kho: 2024-02-18 01:45
Thaum koj coj koj tus menyuam hauv koj txhais tes thawj zaug, koj nkag siab tias nws hlub koj npaum li cas. Txhua tus menyuam nyiam thiab xav tau thiab zoo li ob leeg niam txiv. Tsuas yog leej twg ntxiv? Nws yuav ua tau kom paub tseeb tsuas yog tom qab ib lub sij hawm. Pib txij thaum muaj hnub nyoog ib hlis, cov duab ntawm lub qhov ntswg, qhov muag, thiab pob txha taub hau pib hloov hauv tus menyuam. Ib xyoos tom qab, nws twb paub meej tias cov plaub hau xim yuav zoo li cas, cov duab ntawm pob ntseg tau qhia meej meej, xim ntawm lub qhov muag ntawm cov menyuam yaus hloov.
xub xim
Ntau tus niam txiv txaus siab rau lo lus nug ntawm thaum lub qhov muag xim hloov ntawm cov menyuam yaus. Qhov kev cia siab no txuas nrog lub siab xav paub seb tus menyuam zoo li leej twg. Qhov tseeb yog qhov zoo sib xws yog ib lub tswv yim txheeb ze. Tus menyuam hnub nyoog qis dua plaub xyoos tuaj yeem hloov xim ntawm lawv cov plaub hau lossis ob lub qhov muag. Qhov no yog vim qhov ntau ntawm melanin hauv lub cev. Nws yog tsis yooj yim sua hais raws nraim thaum cov xim ntawm lub qhov muag nyob rau hauv cov me nyuam hloov. Cov txheej txheem no yuav tshwm sim ntau zaus lossis ib zaug xwb. Cov kws tshawb fawb twb yog lawmtau ntau xyoo lawv tau tawm tsam nrog kev daws teeb meem, tab sis lawv tsis tuaj yeem txiav txim siab vim li cas qhov no tshwm sim. Geneticists sib cav tias cov txheej txheem zoo li no cuam tshuam nrog kev hloov pauv. Qhov tseeb yog hais tias tus me nyuam muaj ib tug tsim genotype, kis mus rau nws sib npaug ntawm nws niam thiab txiv. Raws li rau phenotype, nws qib qis vim tsis muaj kev paub txog lub neej. Nyob rau hauv tus txheej txheem ntawm kev loj hlob thiab adaptation nyob rau hauv ib tug me nyuam, ib co noob hloov los ntawm recessive mus rau dominant. Yog li, ib qho kev hloov pauv ntawm ntuj tsim, uas tso cai rau tus menyuam kom npaj txhij rau lub neej uas nws yuav nyob. Outwardly, qhov no manifests nws tus kheej nyob rau hauv daim ntawv ntawm kev hloov nyob rau hauv lub pigmentation ntawm lub iris, daim tawv nqaij xim, plaub hau, thiab lwm yam.
Cov niam txiv feem ntau nug cov lus nug: "Lub sij hawm twg tus me nyuam qhov muag xim hloov?" Raws li kev txheeb cais, ntau dua 70% ntawm cov menyuam yaus hloov lawv lub qhov muag xim thaum muaj hnub nyoog ib xyoos. Cov txheej txheem no yuav tshwm sim ua ntej, qee zaum tom qab me ntsis. Muaj tsawg zaus, cov menyuam yaus tuaj yeem hloov xim mus txog rau plaub xyoos. Muaj qee zaus thaum tus menyuam muaj qhov muag xiav rau ib xyoos, thiab tom qab ntawd thaum lub xyoo lawv tig xim av. Qee lub sij hawm cov xim ntawm iris (lub plhaub ntawm lub qhov muag) ua mus tas li los ntawm lub hnub nyoog ntawm peb lub hlis. Nws tag nrho yog nyob ntawm tus kheej yam ntxwv ntawm cov tub ntxhais hluas kab mob. Yog li tsis muaj ib lo lus teb rau lo lus nug ntawm thaum twg cov xim ntawm lub qhov muag nyob rau hauv cov me nyuam hloov.
Nthuav lub cev
Feem ntau cov xim ntawm iris tseem tsis paub meej txog li peb mus rau plaub lub hlis. Tsis tas li ntawd, nws paub meej yog tias tus menyuam muaj qhov muag xim av. xiav qhov muagCov menyuam yaus tuaj yeem muaj xim tsis paub meej txog li ib xyoos, vim tias cov xim melanin uas lawv muaj qis dua qhov muag xim av. Txhua tus menyuam yaus muaj qhov muag daj daj daj. Qhov no tsuas yog rau cov menyuam yaus xwb. Raws li lawv loj hlob tuaj, cov xim ntawm cov xim tshwm sim, thiab cov xim ntawm lub qhov muag maj mam kis tau qhov tseeb. Yog li ntawd, cov lus nug ntawm thaum twg cov xim ntawm lub qhov muag hloov nyob rau hauv cov me nyuam yuav tsis tau teb tshwj xeeb.
Ntxhais lus tseeb
Cov me nyuam mos ib txwm muaj qhov muag pom. Qhov no yog vim lub peculiarities ntawm lawv adaptation: nyob rau hauv lub tsev me nyuam tsis tas yuav saib vim tsis muaj lub teeb. Tab sis tom qab yug me nyuam, tus me nyuam yuav siv sij hawm ntau rau nruab hnub nyob rau hauv ib lub hlis. Nws yog hom kev paub tsis meej ntawm qhov xwm txheej. Nov yog qee qhov tseeb ntxiv txog qhov iris hauv cov menyuam yaus:
- Qhov muag xim yog qhov tshwj xeeb! Tsis yog vim cov neeg thaum ub suav tias yog lub qhov muag tsom iav ntawm tus ntsuj plig. Txhua qhov speck yog qhov tshwj xeeb, zoo li cov ntiv tes.
- Cov xim ntau tshaj plaws ntawm iris yog xim av, thiab qhov tsawg tshaj plaws yog ntsuab. Hauv qee lub tebchaws cov neeg uas muaj qhov muag ntsuab tau pe hawm.
- Tsawg tshaj li ib feem pua ntawm cov menyuam yaus muaj heterochromia - qhov muag ntawm cov xim sib txawv. Feem ntau qhov tshwm sim no tshwm sim hauv cov menyuam ntxaib.
- Txiv Neej ntseeg tias qhov muag xim yog kis raws li Mendel txoj cai. Yog li, yog tias cov niam txiv muaj tib xim iris, ces lawv cov xeeb ntxwv yuav tau txais tib xim. Yog tias tus khub muaj qhov muag sib txawv, tus menyuam yuav muaj qhov ntxoov ntxoo nruab nrab.
Pom zoo:
Thaum twg qhov muag xim hloov hauv cov menyuam yug tshiab?
Kev yug me nyuam yog lub sijhawm zoo tshaj plaws hauv lub neej ntawm txhua tus poj niam. Txawm tias nyob rau theem ntawm cev xeeb tub, cov niam uas muaj kev cia siab pib nug cov lus nug txog poj niam txiv neej tus menyuam yuav yog leej twg, nws zoo li cas, nws lub qhov muag yuav xim dab tsi. Kab lus no yuav qhia koj seb lub qhov muag ntawm cov menyuam yug tshiab yog xim dab tsi thiab thaum twg nws pib hloov
Puas yog nws tuaj yeem zas pob muag thaum cev xeeb tub: kev xaiv xim plaub muag, cov nyhuv maj mam thiab cov lus qhia kws tshaj lij
Tsis muaj dab tsi tshwj xeeb yog paub txog kev phom sij ntawm cov plaub muag thiab cov plaub muag zas thaum cev xeeb tub, txij li kev tshawb fawb tshwj xeeb tsis tau ua tsis ntev los no. Cov kws kho mob hais tias koj tuaj yeem siv cov tshuaj tsis zoo, muab cov yam ntxwv ntawm lub cev. Cosmetologists ceeb toom txog qhov ua tau ntawm qhov sib txawv ntawm qhov tshwm sim thiab kev cia siab
Txuag hluav taws xob qhov muag teev: qhov zoo thiab qhov tsis zoo. Qhov zoo tshaj plaws lub zog txuag qhov muag teev
Txij li ib qho kev tsim khoom tseem ceeb xws li lub teeb txuag hluav taws xob tau tshwm sim ntawm kev lag luam, cov teeb pom kev zoo li qub tau poob sai sai. Qhov no yog vim lub fact tias los ntawm lub npe heev ntawm cov khoom - lub zog txuag. Yuav ua li cas xaiv ib tug "tsev neeg", hnyav tag nrho cov pros thiab cons thiab tuaj mus rau ib tug txoj cai kev txiav txim? Kab lus no yuav pab tau koj
Hloov cov hniav mis hauv tus menyuam: cov ntsiab lus, hnub nyoog txwv, txheej txheem hloov cov hniav, cov txheej txheem thiab cov lus qhia los ntawm niam txiv thiab kws kho mob
Raws li txoj cai, cov menyuam cov hniav poob thaum muaj hnub nyoog. Txawm li cas los xij, qee zaum lawv raug hloov ua ntej lossis tom qab hnub kawg. Cia peb saib seb nws yuav ua li cas. Nws tseem tsim nyog kawm cov lus pom zoo ntawm cov kws tshaj lij
Kev hloov ntawm cov menyuam mus rau qib kindergarten: thaum twg thiab qhov twg pib
Kev hloov ntawm cov menyuam mus rau qib kindergarten pib tsis ntau nrog cov menyuam lawv tus kheej ib yam li lawv niam lawv txiv. Nws yog lawv uas yuav tsum tau npaj siab rau qhov kev hloov pauv ntawm qhov xwm txheej, txij li qhov kev xav ntawm tus menyuam nyob ntawm lawv tus cwj pwm
