101747

-

-

-

-

-

-

50000

-

-

kWsawM2http://www.youtube.com/watch?v=ITFV

ptT85http://www.youtube.com/watch?v=DlC98J

/alkhalia/k5/level2http://www.schoolarabia.net/ahia.htm1halia_anshtetha

DNA

-

-

r-RNA

DNA

RNA

ptT85http://www.youtube.com/watch?v=DlC98J