8????22????????????,????????????«??»?????????????

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

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

(???????? ?? ???????)

???:????

“??????”_????

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

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

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

3???????

4?????????

5??????????

8????22????????????,????????????«??»?????????????

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

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

(???????? ?? ???????)

???:????