Ha ovum e kopantsoe ka spermatozoon ea sehlopha sa pele, motsoako oa li-chromosome XX o fumanoa, e bolelang ho tsoaloa ha lesea. Ha o kopanya XY, o fetoha batsoali ba moshanyana. Ka hona, haeba u tšoenyehile haholo ka hore na u tla ba le mang, ke habohlokoa ho utloisisa hore na thobalano ea ngoana ea tlang e tla itšetleha ka eng.
Lintho tse amang likamano tsa thobalano
Nakong ea likamano tsa botona le botšehali ka botšehali, basali ba fumana li-spermatozoa tse limilione tse 300 ho ea ho tse 500. Ha ba oela tikolohong ea acidic, ba bangata ba bona ba shoa hang-hang. Ke feela spermatozoa e tsitsitseng ka ho fetisisa e phelang ka ho fetola li-cervical mucus, tse nang le likarolo tse seng kae tsa alkaline, le ho qala leeto la tsona ho pholletsa le toro, e batlang ho lema lehe. Ho sethaleng sena ho behoa, ebang ngoana o tla rata ho senya ka mochine o mochine kapa ho bapala lipopi.
Esita le hona joale sechabeng sa saense, likhohlano li tsoela pele ho feta hore na ho kopanela liphate ha ngoana ho itšetlehile ka monna kapa mosali, empa ho ka etsahala hore ebe batsoali ka bobeli ba ikarabella ho ba tla tsoalloa. A re ke re nahaneng hore na bashanyana ba tsoaloa hangata hakae, le ho banana ba mofuta ofe :
- Spermatozoa, e jereng li-chromosome ea X, e tsamaea butle ho feta ba tsamaisang li-chromosome tsa Y. Ka hona, haeba mohoete o hlaha ka letsatsi la ho phomola ha letsatsi kapa ka letsatsi le hlahlamang (14-15 letsatsi la sekhahla se tloaelehileng sa ho ea khoeling), joale lebelo la Y-spermatozoa le tla fihla ovule ka potlako ho feta bahlaseli ba X, kahoo moshanyana o tla tsoaloa. Ka lehlakoreng le leng, bahlophisi ba bona ba X ba atleha haholo, kahoo haeba thobalano e etsahetse matsatsi a seng makae pele ho phofu ea letsatsi (letsatsi la 12-13th ea potoloho le nako ea eona e tloaelehileng), e mong oa bona a ka 'na a kotula ovum. Joale ho loketse ho letela ngoanana eo.
- Le hoja liphatsa tsa lefutso tsa mehleng ea kajeno li bolela hore thobalano ea ngoana e itšetlehile ka ho feletseng ho monna eo, bafuputsi ba bang ba re 'mè o boetse o khona ho susumetsa hore na ke mang ea tsoetsoeng hantle. Ho etsa sena, o tlameha ho khomarela lijo tse itseng. Haeba mosali a lakatsa ho ba mojalefa, o eletsoa ho hlahisa lihlahisoa tse ngata tsa nama kamoo ho ka khonehang lefung, raese le semolina, litholoana tse omisitsoeng, litapole, le metsi a tee le alkaline. Hape e le hore e be 'mè oa ngoanana ea lebeletseng nako e telele, ho hlokahala hore u khethe litlolo (ntle le litapole), lihlahisoa tsa lebese, tlhapi, mahe, lipompong, jams, linate le ho noa metsi a mangata a nang le khauta. Ka hona, karabo ea potso, hore na thobalano ea ngoana e itšetlehile ka mosali, e tla ba e nepahetseng.
- Ho na le khopolo ea hore haeba u qoba ho ba haufi
likhoeli tse peli kapa tse tharo, joale ngoananyana o tla hlaha. Haeba monna a tloaetse ho kopanela liphate khafetsa, ho tsoaloa ha moshemane ho banyalani ba tiisitsoe. - Ho ithuta bothata ba batsoali ba itšetlehile ka thobalano ea ngoana, litsebi li ile tsa tobana le taba ea hore haeba lelapa la ntate le ne le le motona haholo, joale, ho ka etsahala hore ebe ho lebeletsoe ho letela tsoalo-holo.
- Hape ho lumeloa hore haeba u emola ngoana ka khoeling ea selemo (February, April, joalo-joalo), joale u tla fetoha batsoali ba ngoanana, empa haeba u rera moshemane, ho molemo ho rera palo ea khoeli e sa tloaelehang (January, March, joalo-joalo. .).