Amawele ayenokuLungisa-axhaswe okanye angakwesokunxele-okanye mhlawumbi enye yeyodwa
Ngaba amawele akho angakwesokunene okanye asekhohlo? Okanye mhlawumbi ziyingxenye nganye? Okanye udeleleke? Amawele ayenendima ebalulekileyo kwinzululwazi yophando malunga nokunikezelwa, nangona ngeendlela ezininzi baxhamla imfihlelo ngaphezu kokusombulula.
Iinkcukacha eziphathekayo kwi-Handedness and Twins
- Ngaphantsi kwe-10% yabemi ekhohlo.
- Kukho amancinci amancinane kunamabhinqa.
- Phantse i-20% yazo zonke iimbini ezimbini ezifanayo zifana newele elilodwa lokunene kunye nelinye leswele.
Amasiko kunye neenkolelo ezinqamlekileyo zidibaniswa nekhohlo kwiindawo ezijikelezayo kwihlabathi kunye nakwiimbali. Ngelishwa, kwiimeko ezininzi, ukushiya kwesokunxele kudibaniswa neziganeko ezimbi okanye ezingathandekiyo. Ngokomzekelo, umlando we-Iroquois wamandulo uchaza ukudalwa kwehlabathi ngamaqela ewele. Iwele lesandla sokunene ladala amahlaba, izityalo kunye nezidalwa zendalo. Iwele langesobunxele ladala inyoka, ameva, neziphepho!
Indlela Yokusebenza Eyenzeka ngayo
Abantu abaninzi bacinga ukuba ukukhethwa kwesandla kuwuphawu lofuzo. Nangona kunjalo, oko akunjalo ngokupheleleyo. Uphando olukhawulezayo lweewele ezifanayo kunye nokunikezelwa okuhlukeneyo kuya kuqinisekisa ukungafani. Abaphengululi baye bazama ukuchonga ukuxhamla kwemfuza. Olunye uphando lwafumanisa ukuba nangona bobabini abazali bekhohlo, abantwana babo banokuthi banokulungiswa.
Kukho iingcamango ezininzi zokuba kutheni abantu babonise ukhetho omnye kwesinye. Kukholelwa ukuba ukuhlanganiswa kwemfuza kunye nemeko yendalo yenziwa. Iiprojekthi ezithile zeengcamango ezibeka kwisibeleko zinquma ukunikezelwa, okuya kuba nengqiqo ngamabini ngamabini abo abalungile nangesandla sokunxele kuba besenokuba balele kwiindlela ezichasayo kwisibeleko.
Enye imbono ibonisa ukuba ukushiya kwesokunxele kubangelwa ngenxa yokuxinezeleka okanye intlungu yokukhulelwa ngexesha lokukhulelwa okanye ukuzalwa, akukho nto leyo ukukhulelwa ngamawele okuxinzelelekileyo kubangelwa yintsholongwane emininzi.
Kwelinye icala
Ngelixa zonke ezi ngcamango ziyanomdla, akukho nelisa ngokupheleleyo umba, kuba azinamalungelo kuzo zonke iintsana. Enye ingcamango ibonisa ukuba amava okubeletha anesithintelo, esichazela ukuba ukunyuka kwamayeza e-testosterone kwisibeleko kunciphisa ukuphuhliswa kwe-hemisphere yengqondo. Oku kuya kuchaza iziganeko eziphezulu ezisekhohlo kumadoda, kodwa kwakhona phakathi kwephindaphindiweyo ukususela kumanqanaba e-hormone kunyuka ngexesha lokukhulelwa nge-multiples.
Ekugqibeleni, omnye oyingcali unikeza inkcazo yokunikezela ukuxabana phakathi kwamawele afanayo. Ngomhla kaJulayi / Agasti ka-2003 we-Twins Magazine, uDkt. Geoffrey Machin uchaza into ebonakalayo yesiguqu somfanekiso wesibonakaliso , esoloko ebonisa ukukhethwa kwezinto ezichaseneyo. Uyichaza ngokubhekisela kwindlela amawele e-monozygotic ahlula ngayo emva kokukhulelwa.
"Kungenzeka ukuba ukwahlukana ... kwenzeka ukuba amawele abe ngecala ngapha nangapha. Oku kuthetha ukuba i-twin-ngakwesokudla kufuneka ikhawuleze ibe yecala elincinane lasekhohlo ngenxa yokuba i-twin- kwi-ngakwesobunxele uye wayithatha, kwaye elinye iwele limele lenze icala elitsha lasekunene. Mhlawumbi kutheni elinye iwele lihlala liphethe ubuchopho obufanelekileyo, kanti elinye linengqondo ebunxele. "
Isebenza kum
Oku kubonakala ngathi kuchaza imeko yam mawele. Omnye weentombi zam iindini zishiywe, kwaye enye inesandla esifanelekileyo.
Imithombo:
Johnston, DW, kunye. al. "Ingqiqo Yendalo? UkuPhathwa kunye nokuPhuhliswa koLutsha lwaBantwana. " UkuDemography, ngoMeyi 2009. Pg. 281.
Ocklenburg, S., et al. "Ukuxhaswa: Ukuguquka kwe-neurogenetic yeembono." I- neuroscience kunye neengcebiso ze-Biobehavioral, Disemba 2013. Pg. 2788.
Powledge, Tabitha M. "Ukushiya ngakwesobunxele: iGenesis kunye nomcimbi wengozi." Iprojekthi yoLwazi lokuFunda nokuBhala, ngoDisemba 2014. https://www.geneticliteracyproject.org/2014/12/02/left-handedness-genes-and-a -ngeniso-yithuba /