Mubvunzo. : "Pane chimwe chikonzero nei mapatya akabatanidzwa? Pane nzira ipi yekudzivirira nayo asati aberekwa?"
Mhinduro: Mhinduro shomanana yemubvunzo uyu ndi "Kwete." Hapana nzira inozivikanwa yekudzivirira kuwirirana twinning. Asi kuti zvive zvakakwana kugadzirisa nyaya yekudzivirira kuwirirana kwekubatana, zvakakosha kunzwisisa zvishoma pamusoro pekubatana mapatya. Uyu mubvunzo wakaoma kupindura pasina kutanga kutarisa kuti sei uye nei sei vakaroorana mapatya achiitika.
Chii Chichibatanidzwa Maviri?
Vakabatana mapatya ane mhando ye monozygotic mapatya. Iko kuti, inotanga seyygote imwe chete inoparadzaniswa kuva maviri. (Zygote isai inoberekwa.) Pane imwe nguva mushure mekuberekwa, sezvo zygote inofamba ichienda kuchibereko chekugadziriswa, masero anokamura nekubatanidza. Uye mune monozygotic mapatya, masero akaparadzana ndokuumba seviri blastocysts, zvichiita mapatya. Iko kupatsanurwa kunogona kuitika mukati memazuva mashomanana, asi mune dzimwe nguva, inonoka uye haina kuparadzaniswa kuva mazuva gumi nemaviri kana kupfuura. Ndiyo apo akabatanidza mafa mapatya, mapatya anowedzera mudumbu nechirwere chemuviri. Sezvinorehwa nezita, ivo vanhu vaviri vanobatana pamwechete. Vanogona kugovana ganda uye mavara, kana kuti vanogona kukura pamwe nhengo nhengo dzakagoverana. Akabatanidzwa mapatya haawanzoitiki, anowanikwa muvana 1 000 chete vanozvarwa vana mazana maviri.
Zvinokonzera Monozygotic Twinning
Hazvizivikanwe chinokonzera monozygotic twinning , uye saizvozvo, hapana munhu ane chokwadi chaicho chinokonzera kuwirirana twinning.
Kunyange zvazvo pane dzidziso yekutsanangura kuti sei majoka mapatya aripo, pane zvakawanda zvekusatenda pamusoro pechikonzero chaicho. Hapana chikonzero chakajeka chekutsanangura chikonzero nei mazai akabatanidzwa akaparadzana, achikura kuva vanhu vaviri. Kana kuti hapana tsanangudzo yekuti nei kupatsanurwa kwaizove kunonoka kana kusazadziswa, zvichiita kuti tibatanidzwe mapatya.
Kubatanidza twinning hazvikwanisi kunzi maitiro ezvinyorwa, maitiro aamai, kushungurudzika, utachiona, kurwara, nyaya dzezvakatipoteredza kana zvimwe zvipi zvinozivikanwa panguva ino.
Sezvo zvisingazivikanwe zvinokonzera mamiriro ezvinhu anogadzira mapoka maviri, hakunawo nzira inozivikanwa yekudzivisa kuti irege kuitika. Monozygotic twinning - uye akabatanidza twinning - inoramba iine zvimwe zvisinganzwisisiki zvakavanzika.
> Sources:
Spencher, R. "Theoretical and analytical embryology yekubatana mapatya: chikamu I: embryogenesis." Clinical Anatomy , Vol. 13, Nyaya 1, 2000, p. 36-53.
Quigley, C. Akabatanidzwa Twins: Anhoroondo, Zvezvakaberekwa uye Maitiro Ezvinyorwa Encyclopedia, McFarland & Company (2003).
Chokwadi pamusoro pemamwe mapatya. University of Maryland Medical Center. http://umm.edu/programs/conjoined-twins/facts-about-the-twins.