Tuxumdonda urug'lanish jarayoni sodir bo'lganidan so'ng tuxum hujayra bachadon.,-■ nayiga o'tib, rivojlanishni davom ettiradi

(v18-1-535) Barglar kengligi va gul rangini

belgilovchi genlar to'liqsiz birikkan genlar bilan ifodalanadi, siyoh rang oq rang ustidan dominantlik qiladi, tor barglar kenglar ustidan dominant. ^?

Siyoh rang gulli tor bargli digeterozigotiar o'zaro chatishtirildi. Agar gametalarning 50%

143. 
     Jins genetikasiga doir masalalar erkak krossingoverlangan va hamma urg'ochi gametalar - krossingoversiz.
     

Avlodning genotipi (a) va fenotipi (b) sinflni toping.

1. 
   a -1:2:1:1:1:1:1; b.-5:1:1:1
   
2. 
   a-1:1:1:1:1:1:1:1;b-1:1:1:1:1:1:1:1
   
3. 
   a-4:4; b-5:2:1
   
4. 
   a-2:2:1:1:1:1; b-4:2:2
   

48.