????:1???????150???:????????

2??????????

3?????????

4????????????

5??????????

?????7???????23???????? (????? ?????????)??????????,?????????“????????????????????”?????????????????????????????????23????????????????,?????XYY???,?????????????????????

????????????????,????????????,??,??????“XYY????”,????????22???????Y???????????,?????????Y??,???????,???Y???????????????,???1/500???????????????????????1/1000?

??????????,????????,???,??????????????????????????????????,?????????????????????????:??????,??190??????????????,??,????,???????????,???

??????????,????????XYY?????,??,????????,???????,??????????,???;???,???????????????XYY?????,?????????????????????????????????????????????????????????????

??,????XYY???????????????????????,????????“?????????????”?????????????20????????XYY????????????????????????????

??,??????XYY????????????????“?????”???????????,??????XYY?????????????????????????????????,??????????XYY?????,?,??????????

?????,??????????,???????????????????????,??????????????????12000????,??????????9??XYY??????????????????????9?????????????

??????????????“?????????????”??????,12????????????????DNA???????,???????

??????????,????????????????XYY????????????????,?????,???????,???????????????????????????,????????????????????????,????????

???????XYY????,?????????????????????????????????????????????????????????,????????,????????????????,??????,?,???

??????????????????????,?????????????,?,??????????:???:????,????:????(=35???????)??????;??:??????,???????????????????:???????????????(???) ????????????????????:??????