Slide 1

ABCD : B,C,D,A

A 4 B: 1 C: 2 D 3: ;/2n 1n DNA ;/2n 1n DNA . . ; . . ;Bb ; ;BB or Bb bb F1 F2;BB bbF1

F2BB bbF1 Bb Blue

F2 BB Bb bB bb

Blue Blue Blue Yellow Punnet . ( )

Punnet F2 TT

TallTt

Tall TallshortTT x tt

T

t T t Tt tt Tt x Tt F1 Punnet ( ). ( ) punnet F1 = L = l = R = rLLRR X llrrLlRr

F1 PunnetLlRr X llrrLR, lR, Lr, lr X lr LlRr llRr lLrr llrr lr

LR lR, Lr, lr 1 : 1 : 1 : 1 c2:

: Red : White 3:1

: Red 86 White 34

; ; c2c2= (-)2/

() ()O E=D ()D2

D2/ERed86White34

Sum c2 c2 =

p c2 c2c2= (-)2/

() ()O E=D ()D2

D2/ERed8690 -4160.18White3430+ 4160.53

120

Sum c20.71 c2 = 0.71

p c2 (df)0.200.050.0111.643.846.6423.225.999.2134.647.8211.3545.999.4913.28Sum c2 = 0.71df = 10.71 < 3.84 ( )

;

( , ttbb). . : TTBB , TtBb TTBb, TtBB ttbb ( )

TTBB x ttbb TtBb x ttbb

( 1 :1 :1 :1)

TtBB x ttbb TTBb x ttbb

50% 50% (tall), (Red) (Smooth) 80137100 1005392 503344 (T/R) = (7+13)/(80+7+13+100)= 20/200=0.1 = 10%

(T/S)= (5+3)/200= 4%

(R/S) = (3+3)/100= 6%

10cM=10% R = = R = SS4cM6cM