Dihybrid Gross Worksheet
Set up a punnett square using the following information
Dominate allele for tall plants = D
Recessive allele for dwarf plants = d
Dominate allele for purple flowers = W
Recessive allele for white flowers = w
Cross a homozygous dominate parent
(DDWW)with a homozygous recessive parent
.
o
.
.
.
2.
Using the punnett square in question #1:
of producing tall plants with
purple flowers?
a. What is the probability
þOt/-
possibte senotype(s)?
b,
I
0\d
Ð
(,)
DÀW"
ì¿w* l8 U" û.l !'*,
rJ'^r
D\!*
0ò,cw N,ry* i¡\yri^r
'{.Ëtd"
J-
(ì
Ji
¡-)
3.
r
/r
,
!v
Possible
c.
ùìWu,
lf
Ddw'
Dü\J
rv
"
.
l),J'/''
Recessive allele for smooth fur in guinea pigs
=r
What is the probability of producing dwarf plants
with purple flowers?
4.
Using the punnett square in question #3:
What is the probability of producing guinea
pigs with black, rough fut?
a.
?f lU
Possible senotype(s)?
b,
ß'_
'( \,K t,-
Êb"1(
Bß(c fS--
vrø*
,rß, ,
¡ßR, bißr,
bR
ebÊq.
ßbd
\bQK 6,
b"
B!ßr
V\c( e
DvT"
i(
þUt
&9ç 6b K.
What is the probability of producing guinea
p¡gs
with black, smooth turz
Cross a heterozygous parent (BbRr) with a
heterozygous parent (BbRr)
bK ßgq'f
Ø
ó
Possible genolype(s)? /
DJ Y",
R,
(<
ø
.6
Possiblegenotype(s)?
Set up a punnett square using the following
information:
. Dominate allele for black fur in guinea pigs = B
. Recessive allele for white fur in guinea pigs =b
r Dominate allele for rough fur in guinea pigs =
.
genotype(s)?
What is the probability of producing tall plants with
white flowers?
d,
'¡r
What is the probability of producing dwarf plants
with white flowers?
.ø
(ddryw)
\)v
ÞJ WW
possibte
c.
senotype(s)?
l3ß.. . ßb.-
What is the probability of producing guinea
ptgs
d,
3f lV
with while, rough fur?
5l lt-'
possibtegenorype(s)?
WKK bbß.
What is the probability of producing guinea
pigs
with white, smooth fur?
Possible genotype(s)?
tlKe
bbr-
5.
Set up a punnett square using the following
information:
. Dominate allele for purple corn kernels = R
. Recessìve allele for yellow corn kernels = r
. Dominate allele for starchy kernels = T
. Recessive allele for sweet kernals = t
. Cross a homozygous dominate parent with a
homozygous recessive parent
7.
information:
.
{a
Y"ñ't,
rt,
(:\i
¡L
YT
(t
I
t-'
Dominate allele for normal coat color in wolves =
N
.
Recessive allele for black coat color in wolves
r
Dominant allele for brown eyes = B
Recessive ailete for btue eyes =
A/nß,b
Cross a heterozygous parent with a '
heterozygous parent
o
.
hn
(,tt
r'; L t('
\IF
j
{
\'rl I r
/1 ,.-
I
zj
Yít1, K, L
(,¡
((,¡
ir'r
-t
I
¿
,
-..
L
"
l_
t\b
,íi
k',1¿
t
nÞ)
6.
Using the punnett square in question #5:
a. What is the probability of producing purple,
starchy
corn kernelsf I
Õi_i)-
Q'¡c
Possible genotype(s)?
b.
What is the probability of producing yellow,
starchy corn kernels? O
Possiblegenotype(s)?
c.
8
What is the probability of producing yellow, sweet
corn
kernels, O
Possible genotype(s)?
[." f]l/fb
MoulM^,- n,låt
possibre
rtnbß
fin'/v
"V"", T llV
irl,i i , .,NN ßk},,
b. Wlrat is the probabtlity of proclucing a qolf with a $J'' Þf'
senotype(s)n/V¡ll.j{:,,
norrnal coat color with blue
Possible senotype(s)?
c.
possibte genotype(s)?
d.
eVest
j
tVlVbb
f¡ç
¡¡^rJ¡.;,L
What is the probability of producing a wolf with
a black coat with brown eyes? 3
lllv
nßß nrißb
What is the probability of producing a wolf with
a black coat with blue eyes?
t
Possible
C
NIVÀI
Using the punnett square in question #7:
What is the probability of producing a wolf with a
normal coat color with brown
g
p
nN
ûVnßb
a.
What is the probability of producing purple, sweet
corn kernelsZ
Possible genotype(s)?
d.
O
^tNßlNvtr ^v8ß
NM6LINlr¡¡
"
b
v{5 lt^fAflinrÈ nnßt
L
. i.
=
n
r
Kf Kf
{¿,-iL
Set up a punnett square using the following
genotype(il
bL)
f
trC
6 xia
a - 1ø,:L-
l,tr ['P
b
Ér
j.'r--*;aF
Tf y'p
L
tf
'lL
L
X
t'
r
lLPf
/t
L- I
'T t-
II
'1'L \l/
L7
I
I
I
t
(
\, Y
p
7
\
7
?
.{AfÌ
L
,T
,('
t-
'1I )(-.
1Lí'r
1?
-i P TÎPP
T,
I
1,1 ,l 4 L
1L?r
-
LL ??
t'-
+-?
L?
\
t
l'i
; ) t'.
-vj I
I
+,,
la
çJ r"{1n
{.(5
(
;1,
rl lf-
iî.'.f'ør
lo a.
cP)
T,'
r''h
p,H
/\
LT,
t,ß1.,1+
-ttu
t-.\..
bßI^rr trÊut+ hßh l+
l-tÊl"t^ l,tß'\U l' ß\u
Fr\n
ßh
-
bß
bPlt
å
h
(l
i+
l,f2ì"h bßVr^
¡ 'lt-
å.\,1.1'
r
c ,J t,
.v
tT tLe
(rÀ
N+,
nl ñã1- \l"uf .,rf{l
¡'-)
L¡r!
f\i
t-ù'r'
)z fisrv
{
N"tÈ nnì't
h¿ \l^+¿
,r^T
Jo*v,,nn,ni
\l"t,-i- NJ"'1-f nffi,
rYr, h/^l
¿ lJ'rt'i
Lnrd
I
)A
n
I
(
Y(
Y