Odnoyaytsevye ndi mapasa a raznoyaytsevye

Makanda amene mayi anabala chifukwa cha mimba imodzi amatchedwa mapasa. Ana oterewa amachititsa chidwi pakati pa anzawo komanso akuluakulu. Ndipotu, mimba za mimba zambiri zimakhala zochepa kwambiri kuposa singleton. Pali odnoyaytsevyh ndi raznoyaytsevye mapasa. Amatchedwanso monozygotic ndi dizygotic. Zinthu zosiyana zimakhudza kugonana kwawo. Zikudziwika kuti ana aamuna oterowo amabadwa kawirikawiri.

Kusiyana pakati pa mapasa ofanana ndi osiyana

Monozygotes amawonekeratu, ngati spermatozoa imabzala dzira limodzi, lomwe limagawanika mu magawo awiri kapena kuposerapo. Iwo amakula mosiyana, akhoza kukhala ndi placentas wamba kapena osiyana. Ana otere ali ndi zotsatirazi:

• iwo ali kwenikweni a chiwerewere chomwecho;
• kunja akuwoneka chimodzimodzi;
• iwo ali ndi zolemba zofanana zofanana;
• iwo ali ndi gulu lomwelo la magazi;
• kawirikawiri amafanana ndi khalidwe, chikhalidwe;
• iwo amadziwidwira ku matenda omwewo.

Zonsezi zikufotokozedwa ndi zofanana za majini. Kwenikweni, amasiyana bwanji ndi mapasa ofanana kuchokera ku raznoyaytsevyh, omwe ali ndi mitundu yosiyana siyana.

Koma nthawi zina, galasi lokhala ndi maonekedwe likutheka. Mwachitsanzo, mmodzi mwa anawo angapereke choyenera, ndipo wachiwiri akumanzere. Lingaliro la dizygotic limachokera ku mazira omwe amamangidwa ndi spermatozoa osiyanasiyana. Izi zikhoza kuchitika ngati mazira angapo amakhwima mu chizunguliro chimodzi mu thupi lachikazi. Pali zifukwa zingapo izi. Ana ali ndi mawonekedwe osiyana, khalidwe, chikhalidwe. Zingakhale zinyenyeswazi, monga chimodzi, ndi kugonana kosiyana. Awa ndi abale kapena alongo omwe anabadwa tsiku lomwelo. Odnoyaytsevye mapasa amabadwa mochepa raznoyaytsevyh ndipo amapanga pafupifupi gawo limodzi mwa magawo atatu alionse.