I-Concept of Generational Twinning
Inkolelo evambileyo malunga namawele kunye nokuphindaphinda kukuba amawele atyuka isizukulwana. Abanye abantu bacinga ukuba akunakwenzeka ukuba iwele ziza kuba namawele, kodwa ziyakwazi ukuba neenzala ezimbini. Ngaba kukho nayiphi na isiseko sezesayensi kule nkolelo?
Ngaba Ukuhlawulelwa Kulifa?
Le nkcazo isekelwe kwisicatshulwa sokuthi ukuwahlula i-genetic kwaye kusebenza kwiintsapho.
Nangona kunjalo, ukuba oko kwakunjalo-ukuba kwakukho i - gini- gama -a mawele ayeza kwenzeka ngeemeko ezinokuqikelelwa kule mizalwane ephethe i-gene. Sekunjalo, zikhona ezimbalwa iziganeko zeentsapho ezineamawele kuzo zonke izizukulwana zabo. Izikhelo zizathu sokuba abanye bacebise "ukunqumla isithethe".
Olunye uhlangothi luyakwazi ukubonakalisa i-genetics. Ngelixa ikhona i-gene ye-twin gene, kukho i-genetic component eyenza abanye besetyhini baxhomekeke ekukhuliseni amawele. Ukuxhamla, ukuthambekela komfazi ukuba akhulule iiqanda ezingaphezu kweyodwa kwimijikelezo yokuya esikhathini, unokuba nefuthe lofuzo. Ukuba amaqanda amabini okanye ngaphezulu atyunjwa, i-dizygotic (i-fraternal) i- twinning ingenzeka. Nangona kunjalo, amawele e-monozygotic (afanayo) acatshangelwa ukuba ahleliwe; akukho nxalenye yezofuzo eziye zachongwa ziphakamisa i-twinning efanayo .
Genetics of Hyperovulation
Kuze kube ngoku, uphando lwezifo ezithile zentlobo zibonise iziphumo eziphikisanayo nokuba ngaba zibangele ukuxhatshazwa okanye zandisa amathuba okuba namawele omzalwana.
Naluphi na ingxoxo yomdla obangela ukuxhatshazwa kwegazi kuphela. Ngaloo mzobo, nantsi indlela i-genetics eya kudlala ngayo.
Ukuba imbangela yokwahlula ihambelana nokuxhatshazwa komzimba, kuphela uzalwane lomama luya kuba nomthelela kumathuba ukuba abe namawele . Indima kabawo ayinanto engenziyo kwisizukulwana esikhoyo.
Ukuba izalamane ziqaphela ukuba "amawele ahamba ngecala likamama," umfazi usenokuba namathuba amawele, kodwa kungekhona ukuba "amawele agijima kwicala likayise." Oku kuyinyaniso kweso sizukulwana, njengoko i-genetics yobawo iyakuchaphazela amathuba okuba inzala yakhe ineamawele.
Ukuba i-gene yayigxininisekile, ibhinqa liyakudinga kuphela ukuba umzali omnye adlulise i-gene ukuze i-hyperovulate. Izinto ziba nzima ngakumbi ukuba i-gene ixhomekeke kakhulu kwaye umfazi uya kufuneka ukuba afumane iikopi zegeni kubazali bobabini ukwenzela ukuyiveza.
Amabhinqa aphelisa isizukulwana
Abantwana bafumana igalelo kubazali bobabini, kwaye i-genetic my genetic for hyperovulation ingadluliselwa ngumama okanye uyise. Ngethuba umama ebonisa i-gene nge-hyperovulating, uyise uya kuba ngumphathiswa ongenalutho we-gene.
Intombi yesibini apho ubaba okanye umama ophethe i-genetic hyperovulation iyakwazi ukuba namawele. Indodana yesi sibini yayingeke ikwazi, nangona ingaba yinkampani yezinto eziphilayo kunye nentombi yakhe inokuthi ibe namawele. Ukuba lo mfuzo wawukhona kwaye isibini sasingenayo intombi, oonyana babo bebengayi kuba namathuba amawele, kodwa abazukulwana babo babeya kuthi, kwaye umgangatho wawuza kudlula isizukulwana.
Umzekelo
Makhe sibone umzekelo wentsapho ukuqonda oku. Kulo mzekelo, i-gene iphezulu kwaye iboniswa ngabafazi nangona ifa livela kumzali omnye kuphela.
- Isizukulwana sokuqala (amawele): uAdam noEva. Makhe sicinge ukuba u-Eva unesifo somfutho we-hyperovulation. Banabantwana abathandathu. Abini kubo bangamawele amamawele, uYese noYakobi.
- Isizukulwana sesiBini (Akukho mawele): UJese noYakobe bakhula. Bathumela ngabantwana abathathu, kodwa akukho mawele. Nangona bephethe i-gene ye-hyperovulation, abavumi. Ngoko ke abachaphazeli ukuba kungenzeka ukuba amaqabane abo aya kuba nomama.
- Isizukulwana sesithathu (amawele): abantwana bakaYese; Bantwana bakaYakobi. Aba ngabazukulwana bakaAdam noEva. Intombi endala kaYese, masibizele ngokuthi uMadonna, uzala iintombazana zeentombi, uThelma noLouise. Intombi kaYakobi encinci, uBeyonce, ibeletha intombazana / intombazana, uLuka noLeia. UYese noYakobi basenokudlula i-gene hyperovulation kwiintombi zabo.
- Isizukulwana sesine (?): Ucinga ukuba kuya kwenzeka ntoni? Inzala yabantwana ingaba namawele. Okanye abanako. Inzala yindoda ayinalo igalelo kumathuba avelisa amawele. Kodwa bangaba namawele okanye aphindaphindiweyo ngezizathu ezahlukeneyo zezinye izizathu, kwaye banokudlula ngokuzenzekelayo i-hyperovulation gene kwizizukulwana ezizayo.
Kulo mzekelo, uyabona ukuba kutheni kubonakale ukuba amawele awela isizukulwana. Kodwa akuwona umthetho okhuni kwaye okhawulezayo. Ngamanye amanqaku amanqaku afake isandla ekuveleni i-twinning , i-genetic hyperovulation gene iya kuba yinto enye echaphazela inkqubo.
Igama elivela kwi-Verywell
Kuze kubekwe i-gene yokugubula, le ngxoxo imane nje iyimisebenzi ejabulisayo ekuqondeni i-genetics. Njengoko izibini ezithandwayo zisebenzisa izixhobo zonyango zokuncedisa kunye nezobuchwepheshe, isihloko siya kuba ninzi ngakumbi. Unokuba ngumhlaba ongathandabuzekiyo xa uxoxela le ntsapho njengento yokwelapha inokuthabatha inxaxheba kwi-hyperovulation nokuzalwa kwamawele.
> Umthombo:
> Ngaba amathuba okuba neamawele afumaneke kwiGenetics? I-Reference Reference Home, i-US National Library of Medicine. https://ghr.nlm.nih.gov/primer/traits/twins.