Uwuphi umehluko?
Ukwahluko wokuqala phakathi kwe-spermatogenesis kunye ne-ovogenesis yinyaniso yokuba ngaphezu kwecala lokuzalisa, ukukhula komzimba, ukukhula, kukho kwakhona isakhiwo sesine. Kulo thuba ukuba iiseli zokuzalana zesilisa zenza i-apparatus yokuhamba, ngenxa yoko zifumana ubungqina obude, obangela ukuhamba kwazo.
Ingxenye yesibini eyahlukileyo ingabizwa ngokuba yinto esekelwe kwisigaba sesahlulo esivela kwi-spermatocyte ye-oda, ii-4 zesini zesondo zifumaneka ngokukhawuleza, kwaye enye yelesi yesibini yokuzala iyalungiselelwa ukusuka kwinqanaba lokuqala le-oocyte, elulungele ukuchumisa.
Xa kuthelekiswa nedatha yeenkqubo ezi-2 (i-oogenesis kunye ne-spermatogenesis), kufuneka kuphawulwe ukuba i-meiosis yezesini zesini kubasetyhini ibonwa nakwizinga lokuphuhliswa kwe-intrauterine, i. Iintsana zizalwe ngokukhawuleza kunye ne-oocytes zomyalelo wokuqala. Ukukhula kwazo kuphelisa kuphela ngokuqala kokukhula kwesondo kwintombazana. Nangona kunjalo, kumadoda, ukubunjwa kwe-spermatozoa kwenzeka ngokuqhubekayo, ngexesha lokuphela komntwana.
Enye yeentlukwano kwi-spermatogenesis kunye ne-oogenesis yinto ebonakalayo kumzimba wesilisa, ukuya kwi-30 million spermatozoa imihla ngemihla,
Kufuneka kwakhona kuqaphele ukuba isigaba sokuzaliswa ngexesha le-spermatogenesis livela ngokuqhubekayo, ngelixa i-oogenesis iphelela emva kokuzalwa.
Ukuqhelanisa lo mpawu we-oogenesis kunye ne-spermatogenesis, ndingathanda ukuphawula ukuba, ngenxa yokwakhiwa kwe-oocytes kuqala ngaphambi kokuzalwa kwentombazana, kwaye izalise iqanda kuphela emva kokuqumba, izinto ezinobungozi zendalo zingakhokelela kwimvelo engafanelekanga kwimbewu .