????:1?????:???????

2???????

3??????????

4?????100????

5??????????????

11??22???,??????????3??????????????DNA???????,3???????????????2007??????????????????????,17???????????

2007?????????2??14?,5???27?????,8?18????????????????????,??(?,???2???)????????(??????,?2?)?????(??????????,???2????????)?3??????30?????????????,?“?”???

??,???,??????????????,?17?3???(2??1????)????3??

?,???????,???????????(??? ?)

??:????????????