????????к??r?????

??????У??У???У??????????

???????Щr?е???????r???屨???

???棬?????????ο?????????????????ε????????嶯???

?r??r?????????

??????????

???????????鷳??????r??????r????

???????????

??DNA????????????????

??ε????????

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

???????Щ?????С????????????

???????

?С??????

?У???????????顣

?С?????????????????????Ц????????о????

??е?????

???Ц???????

???????

???е???

??д???????

??????????r???Ц???????г??????е????????

?????С??????

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

????嵱??е???????????????????

??

????Ц???????????????????Ц?????Ц?е????????????????????Щ????

?С???????????????С??r?????СУ??r???????

???е??о??磬?????

???Ц?????????????

*************************

?д???д??????д??д???????????????а?????飬????????????????????????????????????????