|
T
Zb
fen
qora
chipor
F, gen
Z^W
X
ZB7b
/ \
/ \
gameta Zb W
ZB
Zb
fen
chipor
qora
chipor
qora
F
2
gen
Z®W
ZbW
ZBZb
ZbZb
a)
8
tasi: b)
8
tasi; v) 40 tasi chipor va 40 tasi qora patli. Ularning yarmi
xo’roz, yarmi tovuq.
7. fen kumush rang
oltin rang
P gen Z AW
X
ZaZa
J S
A
gameta Z A W
Z‘ Z*
fen oltin rang
kumush rang
F, gen
ZaW
ZAZa
a) 15 tasi; b) 2 xil genotip; v) 15 tasi; g) 15 tasi; d) 15 ta.
123
8
. fen
qo’ng’ir
P gen
Za W
gameta Za
W
fen yashil
qo’ng’ir
F, gen
Z AW
ZaW
yashil
Z ^
Z A
z a
yashil
Z A Z a
qo’ng’ir
ZaZa
9. fen
P gen
gameta
F,
sog’lorn
XaXa
1
Xa
kasal
kasal
XaY
A
X
a
Y
X
a
Xa
sog’lom
XaY
Mazkur kasallik dominant holatda nasldan naslga o’tadi va
fenotipda darhol namoyon bo’ladi.
10
. fen
P gen
normal
XKY
XK Y
normal
XKY
X
normal
XKXk
A
gameta
fen
F, gen
25% tuxumdayoq nobud bo’ladi.
letal
Xk Y
X*
normal
XKXK
normal
XKXk
11
. fen
normal
kalta tanali
P gen
Xs X s
X
XSY
SA
/ \
gameta
Xs
Xs
Xs
Y
fen
normal kalta tanali
normal
Fi gen
Xs Xs
Xs Xs
XSY
12
. fen
normal yungli
normal yungli
P gen
X
a
Xa
X
X
a
Y
A
A
gameta
X
a
Xa
X
a
Y
fen
normal
normal
normal
Fi gen
<
X
<
X
<
X
Xa
X
a
Y
Fb normal
Xa Xa
F
2
yungsiz
XaY
normal
XaY
x
kalta tanali
XSY
yungsiz
Xa Y
13. fen malla
qora
P gen XBXb x XBY
124
malla
sariq
F, XBXb
XbY
14.
sariq
yashil
XAXA
x
X“Y
sariq
sariq
F,
XAXa
x
XaY
fen
sariq
ssiriq
sariq yashil
Y
2
gen yXAXA XAXa
XAy
XaY
ÍÍ2
49
yashil
sariq
P
XaXa
x
XAY
sariq
yashil
F, XAXa
XaY
sariq
yashil
sariq
yashil
F
2
XAXa
XaXa
XaY
XaY
15. sog’
te rb e z iy o ’q
P XAXa
x
XaY
sog’ ter bezi yo’q
sog’ ter bezi yo’q
F, XAXa
XaXa
XaY
XaY
16.
tilla rang
kumushsimon
kumushsimon
tilla rang
P
XaXa
x
XaY
P
X
a
X
a
x
XaY
kumushsimon tillarang
tillarang kumushsimon
F,
XAXa
XaY
F, XAXa
XaY
tilla rang kumushsimon tillarang kumushsimon tillarang kumushsimon
F
2
XaXa
XaY F
2
XaXa
XAXa
XaY
XAY
VBOB
Belgilarning birikkan holda nasldan-naslga berilishi.
Krossingover
1
. fen
uzun poya,
kalta poya,
P gen
yumaloq meva
noksimon meva
H
p
H
p
gameta
t i
h
X
p
P
fen
uzun poya,
Ft
yumaloq meva
h
gen
h
P
h
P
uzun poya
yumaloq meva,
H
h
P
p
gameta
H
P
H
p
h
P
125
uzun poya,
uzun poya,
uzun poya,
kalt a poya,
yumaloq meva yumaloq meva yumaloq meva
noksimon
fen
F
2
gen
a) F
2
900 ta; b)
F , 2
xil; v)
F 2
da 3 xil; g)
F 2
da 400 ta.
H
H
H
h
H
h
h
p
p
p
P
P
P
P
2
. fen
kalta, qizil
L
\L
P gen
rs
P
gameta
¿
rs
fen
kalta, yashil
F] gen
gameta
Rs
uzun, yashil
l
Rs
l
Rs
1
Rs
kalta, yashil
/
Rs
fen kalta, qizil
kalta, yashil
kalta, yashil uzun, yashil
F
2
gen
L
L
l
l
L
1
1 1
/
rs
rs
rs
Rs
rs
Rs
/£í|
Rs
a) 2 xil; b) 495 ta; v) 3 xil.
3. fen
P gen
gameta
kulrang tana,
normal qanot
b*
b
*
b
X
vg
+
vg"
vg
b*
vg ‘
qora tana,
kalta qanot
b
vg
b
vg
fen
F
i
gen
gameta
kulrang tana,
normal qanot
b*
b
X
vg*
vg
b'
Vg'
\b
|v g
kulrang tana,
normal qanot
b*
]¿>
Ivg
b*
vg*
re
I
b
fen
kulrang tana, kulrang tana, kulrang tana, qora qanot,
F
2
gen
normal qanot normal qanot normal qanot kalta qanot
V
b*
b*
b
b*
b
b
vz*
Vg+
ïgl
__
vg
vg*
vg
vg
269
^ í r r '
126
4. fen silliq, rangli
burishgan, rangsiz
a
b
gen
A
a
a
B
b
b
gameta
A
a
A
a
B
b
b_
B
bo’lmaganda
krossingover
natij asida
fen
F,
silliq,
rangli
burishgan,
rangsiz
silliq,
burishgan,
rangsiz
rangli
gen
A
a
a
a
A
a
a
B
b
b
b
b
b
B
4163
152
143
4152
Jami: 8616 ta.
Birinchi va ikkinchi genlar orasidagi
krossingover
natijasida
301 ta forma hosil bo’lgan yoki umumiy organizmlarga nisbatan 3,49%
ni tashkil etgan, ya’ni gen orasidagi masofa 3,49% santmorganidga teng.
5. fen katarakta,
P
polidaktiliya
gen
gameta
fen katarakta,
polidaktiliya
gen
normal
A
a
X
a
B
b
b
A a
a
B
b
b
normal
6
. fen musbat rezus,
P
elliptotsitoz
gen
A
o
a
X
b
B
b
gameta
A
a
A
b
B
B
manfiy rezus,
normal
a
b
krossingover krossifigover
bo’lmaganda
natijasida
fen musbat rezus, manfiy rezus, musbat rezus, manfiy rezus,
F¡
normal
elliptotsitoz
elliptotsitoz
normal
a
b
A
a
a
a
A
a
a
gen
b
b
B
b
B
b
b
48,5%
48,5%
1,5%
1,5%
127
7. a) fen qizil ko’z, normal
tuklangan
oq ko’z, vilkasimon
tuklangan
P gen
fV*
r
w
f
X
m
f
w
\ f
W"
W
w~
w
gameta
' A
r
krossingover
bo’lmaganda
fen
qizil ko’z,
normal tuk-
normal
tuklangan
gen
langan
W
r
W
f
krossingover
natijasida
qizil ko’z,
oq ko’z, nor
mal tuklangan
w
w*
w
w
W
W
f
f
f
r
f
f
41%
9%
9%
oq ko’z,
vilkasi
mon
W
f
41%
fen qizil ko’z, normal
tuklangan
oq ko’z, vilkasimon
tuklangan
gen
gameta
W'
f
Wx
f
X
w
f
w
w
w
f
*
_ f
f
krossingover krossingover
bo’lmaganda
natijasida
fen qizil ko’z,
F| gen vilkasimon
tuklangan
w
I
w
f
41%
oq ko’z,
qizil ko’z,
normal
normal tuk
tuklangan langan
w
w
f
w
/ '
oq ko’z, vil
kasimon
tuklangan
w
w
f
f
w
f
41%
9%
9%
b) krossingover miqdori 18% ga teng; v)
W
va / orasidagi maso fa 18%
santmorganidga teng.
8
. fen rangli,
tekis
rangsiz,
burishgan
gen
gameta
A
a
a
a
X
B
b
b
b
a
A
a
b
b
krossingover
krossingover
bo’maganda
natijasida
128
fen
rangli,
rangsiz,
Fi
tekis
burishgan
gen
I
A
\B
4032
Jami: 8362 ta.
4035
rangli,
burishgan
144
rangsiz,
tekis
a
a
a
A
a
a
b
b
b
b
b
B
151
Olingan 8362 ta organizm 100% ni tashkil etsa, krossingover natijasida
hosil bo’lgan organizmlar 3,53% ni tashkil etadi, ya’ni krossingover
miqdori 3,53 santmorganidga teng.
9. fen qizil, mo’ylovchasi bor
P
pushti, mo’ylovchasi yo’q
gen
gameta
fen qizil, mo’ylovchasi bor
pushti, mo’ylovchasi yo’q
F,gen
gameta
X
fen qizil, mo’ylovchasi bor
É
r
T
t
pushti, mo’ylovchasi yo’q
Fbgen
a)
2
xil: b) 600 ta; v) 600 ta; g)
2
xil; d)
2
xil.
10
. fen
P gen
gameta
yashil, xira
sariq, yaltiroq
A
a
B
b
A
a
A
B
b
b
X
krossingover krossingover
bo’lmaganda
natijasida
fen yashil,
sariq,
yashil,
sariq,
Fb
xira
yaltiroq yaltiroq
xira
gen
A
a
a
a
A
a
a
B
b
b
b
b
b
B
310
287
129
Jami: 726 ta. Krossingover miqdori 17,77% gateng.
129
11
. fen
kalta qanot,
P gen
normal oyoq
normal qanot,
kalta oyoq
Do'stlaringiz bilan baham: |
