gomozigotnymi budut te osobi, kotorye belogo i chernogo cveta.
znachit :
74 belyh - gomozigot recessiv bb
77 chernyh - gomozigot dominant BB
152 - kohinurovye - geterozigoty. Bb
P : Bb x Bb (obe norki kohinurovye)
F₁ : BB ; Bb ; Bb ; bb
otsyuda ----> BB = 1/4
Bb = 2/4=1/2
bb = 1/4
esli posmotret na sootnoweniye, otnositelno samoi zadachi , to tak i poluchitsya.
74 ≈ 1
77 ≈ 1
152 ≈ 2
a obwaya summa budet 77 + 74 + 152 = 303 ≈4