????:1?????2020:?????????

2???????????

3?????????

4??????????

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??

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

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