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

2?????????

3??????

4????????

5??????v??

??12??22?????????? ???:????????“????????”:????????????

????????? ???

“??,?????,??????????,??????”??????“90?????”??“????????”???????????????“???”??

“??????????????”“????????????”……??“?”??,????????“?”????????????????2000?????????????????????,???,??,??????????????????“?”?

12?????16?,????????“?????????”??????????????“???????????????????????”?? ????????????? ???

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

“????????????????,?,???,??????”?,???

12???????????????16?,????????????????? ?????? ????????????????????????????

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

“???????????????????,?????????????????2000?????????????????,?????????????”????????????????,??????????

??????,??????

“??????‘DNA’,??????????????????,?????????,?????”???,???????????,?????????????????????????,???

12???????????????????16??????????????,???????????T????????????? ??????????????? ???

?,???T???????????????????????,????“????????”,??T?,??????????????????20???????????????????????????????????,??????????T??

“?????????????????240?,??????????????????”????????????,?,????????,“??????????????????”????,??????(?)

???:?????