Qee yav tom ntej leej niam thiab leej txiv xav yug tus tub lossis tus ntxhais. Nws yog ib qho tseem ceeb rau lawv paub yog tias nws muaj peev xwm los twv kev sib deev ntawm tus menyuam hauv plab. Yog tias tsim nyog, yuav ua li cas.
Nws muaj ntau daim ntawv qhia hnub yuav tsum tau twv seb qhov sib deev ntawm tus menyuam yaus hauv plab, raws li hnub yug ntawm niam txiv, lawv cov ntshav thiab lwm yam ntsuas. Txawm li cas los xij, tsis muaj ib qho pov thawj scientific rau qhov muaj txiaj ntsig ntawm cov theories.
Txhawm rau npaj rau koj tus menyuam yog txivneej lossis pojniam, koj yuav tsum nkag siab txog txheej txheem ntawm kev xeeb menyuam. Kev ua haujlwm yug menyuam tuaj yeem tshwm sim ib zaug thaum lub sijhawm coj khaub ncaws thaum ov ov. Ovulation feem ntau tshwm sim nyob nruab nrab ntawm lub voj voog. Piv txwv, yog 28 hnub dhau los ntawm thawj hnub ntawm koj lub sijhawm mus rau lwm hnub, ovulation tshwm sim rau hnub 14.
Cov kab menyuam tawm tuaj yeem khaws cia hauv tus poj niam lub cev tau li 7 hnub. Thiaj li, kev tuaj yeem tseem muaj peev xwm tshwm sim yog tias kev sib deev tsis tshwm sim rau hnub ov ov.
Cov txiv neej cov keeb kwm yug me nyuam, uas tso tawm cov qe, muaj lub luag haujlwm ntawm kev sib deev ntawm tus menyuam hauv plab. X lub chromosome ua rau kev xeeb tub ntawm tus ntxhais, thiab tus Y chromosome ua rau tus tub. Spermatozoa nrog tus Y chromosome tau nrawm dua thiab tsis tshua muaj zog ntau dua li cov uas muaj X chromosome. Yog li, qhov muaj feem ntau ntawm kev xeeb tub yog yuav tsum muaj kev sib deev nyob rau hnub ntawm ovulation. Ntxov ua ntej, ua ntej nruab nrab ntawm lub voj voog, kev sib hlub tshwm sim, ntau dua qhov muaj feem yuav muaj tus ntxhais.
Txoj hau kev no ua rau muaj sij hawm ntau los tawm tsam qhov kev sib deev ntawm tus menyuam tsis tau yug, tab sis tsis lees 100%.
