Thatha ukuya kuthi ga kuma-95% kwisaphulelo nasiphi na ukuThenga
X (iseli yeqanda) + X (i-sperm cell) = XX, okt, female, okanye. X (iseli yeqanda) + Y (i-sperm cell) = XY, oko kukuthi, indoda. Ngokusisiseko, ukubakho kwenkwenkwe okanye intombazana kunokuthatyathwa njenge-50% nganye phantse kuye wonke umntu. Ngokophononongo olwenziwe kwiimpuku, usana lufuze kakhulu uyise kunonina. Isizathu sokuba le DNA idluliselwe phantsi ...
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