Za a iya ba da yatsa dama ko hagu - a hannunka ko watakila daya daga kowanne
Shin hawaye naka dama ko hagu? Ko kuwa sun kasance ɗaya daga cikin kowannensu? Ko ma ambidextrous? Twins sun taka muhimmiyar rawa a binciken kimiyya game da mika hannu, ko da yake a hanyoyi da dama suna kwantar da asiri fiye da warware shi.
Rubutun Mahimmanci akan Handedness da Twins
- Kasa da kashi 10 cikin 100 na yawancin hagu ne.
- Akwai 'yan hagu na hagu fiye da mata.
- Kimanin kashi 20 cikin 100 na nau'i biyu na tagwaye suna da guda biyu na hannun dama da kuma hagu mai hagu.
Hanyoyin al'adu da kuma imani suna hade da hannun hagu a al'adu a duniya da kuma cikin tarihi. Abin takaici, a mafi yawan lokuta, hagu-hagu yana da nasaba da halayyar zunubi ko fasaha. Alal misali, wani tsohuwar labarin Iroquois ya bayyana halittar duniya ta hanyar jima'i. Hanya ta hannun dama ta kirkiro wurare, tsire-tsire, da halittu masu rai. Hawan hagu na hagu ya halicci macizai, thorns, da hadari!
Ta yaya Handedness yake faruwa?
Mutane da yawa suna ɗauka cewa zaɓi na hannun abu ne na dabi'a. Duk da haka, wannan ba batun gaba daya bane. Yin bincike mai mahimmanci na ma'aurata guda biyu tare da mika hannu daban-daban zai tabbatar da rashin daidaituwa. Masu bincike sunyi aiki don gano hanyar haɗin gwiwar. Ɗaya daga cikin binciken ya gano cewa ko da lokacin da iyaye biyu hagu ne, 'ya'yansu suna iya zama dama.
Akwai ra'ayoyi da dama game da dalilin da yasa mutane ke nuna fifiko don daya hannun akan ɗayan. An yi imani cewa haɗuwa da kwayoyin halitta da abubuwan muhalli sun shiga cikin wasa. Ɗaya daga cikin ka'idodin ka'idar cewa matsayi a cikin mahaifa ya yanke shawarar mika wuya, wanda zai zama ma'ana ga ma'aurata biyu da suke da dama da hagu saboda sunyi kuskure a wurare masu adawa a cikin mahaifa.
Wata ka'ida ta nuna cewa hannun hagu yana faruwa ne saboda damuwa ko rauni a lokacin ciki ko haihuwar haihuwa, babu abin da yakamata ɗaukar juna biyu yana da matukar damuwa saboda 'yan tayi.
A wannan bangaren
Yayinda dukkanin waɗannan ra'ayoyin suna da ban sha'awa, babu wanda ya cika batun, domin ba su da gaskiya ga dukkan jarirai. Wani ka'ida kuma ta aika cewa kwarewa ta shiga ciki tana da tasiri, yana bayyana cewa ƙimar ƙaramin testosterone a cikin mahaifa ya rage ci gaban ciwon hagu na kwakwalwa. Wannan zai bayyana muhimmancin hagu na hagu a cikin maza, amma har ma a cikin yawanci tun lokacin da matakan hormone suka karu a yayin daukar ciki da yawa.
A ƙarshe, wani gwani yana bayar da bayani game da haɗin kai tsakanin ɗayan ma'aurata. A cikin Jaridar Twins Magazine a Yuli / Agustan 2003, Dokta Geoffrey Machin yayi bayanin siffar madubi na hotunan madubi , waɗanda suka nuna sau da yawa daga abin da ake so. Ya bayyana shi a game da yadda mahaifiyar 'yan auren ke raba bayan zane.
"Wataƙila fashewar ... ya faru (s) don haka ma'aurata ta zama haɗe-gefe. Wannan yana nufin cewa maɗaukaki-da-dama ya yi hanzari ya yi sabon gefen hagu saboda ma'aurata biyu- a kan hagu ya dauka, kuma wani ma'aurata ya yi sabon gefen dama.Kannan shi ne dalilin da yasa ma'aurata ke da kwakwalwar kwakwalwa, kuma ɗayan yana da kwakwalwar hagu. "
Yana aiki a gare ni
Wannan zai zama alamar bayyanar halin da nake ciki. Ɗaya daga cikin 'ya'ya mata biyu na hagu, kuma ɗaya ne na dama.
Sources:
Johnston, DW, et. al. "Gwaji na yanayi? Haɓaka hannu da ƙwarewar yara. " Tarihin mu, Mayu 2009. Pg. 281.
Ocklenburg, S., et al. "Handedness: A neurogenetic motsi na hangen zaman gaba." Neuroscience da Biobehavioral Reviews, Disamba 2013. Pg. 2788.
Powledge, Tabitha M. "Hannun hagu: Jinsin halitta da kuma lamari." Harkokin Ilimin Kimiyya na Jiki, Disamba 2014. https://www.geneticliteracyproject.org/2014/12/02/left-handedness-genes-and-a -matter-of-chance /