vd:
+ trong phep lai phan tich: AB_ab x ab_ab--> 46%AB_ab, 46%ab_ab,4% Ab_ab, 4% aB_ab. thi tshv=8%( chinh bang tong % cua cac tinh trang khac bo me). tt neu cho so ca the chu khong phai la % thi tshv = (so ca the khac bo me): (tong so ca the)
+trong cac phep lai khac ta di xet ca the co kieu gen dong hop lan:ab_ab. Neu % cua no 1 so chinh phuong(k^2) thi % cua giao tu ab la k, 2k> 50%--> tshv la 100%-2k, 2k<50%-->tshv la 2k. Neu% cua no ko la so chinh phuong thi phan tich thanh nhan tu (vd 60%=12% x 50%= 20% x30%). tu do xet xem hoan vi xay ra o 1 hay 2 gioi--> tshv.