45 6. F2 dagi belgilaming ajralishini statistik usulda tekshirish — X 2................................................................... 47 Savol va topshiriqlar........................................................................ 50 Testlardan to‘g‘ri javobni aniqlang................................................ 51 5§. Diduragay va poliduragay chatishtirish................................. 52 LDiduragay chatishtirishda belgilaming toiiq va oraliq holda irsiylanishi.............................................................. 53 2.Diduragay chatishtirishning sitologik asoslari......................... 56 3.Poliduragay chatishtirish.............................................................. 58 4.Diduragaylardan olingan natijani statistik usulda o ‘rganish..................................................................................