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WorksheetsPunnet Squares
Total questions: 12
Worksheet time: 3hrs 0mins
Name
Class
Date
1.
T - tall and t = short
In the punnett square below, what belongs in the missing square
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
2.
What allele combination should go in the missing box?
a)
AA
b)
Aa
c)
aa
d)
none of these
3.
If B = brown hair and b = blonde hair, what is the probability of brown hair?
a)
25%
b)
50%
c)
0%
d)
75%
4.
G = green, g = yellow
The genotype for a yellow plant is...
The genotype for a yellow plant is...
a)
GG
b)
Gg
c)
gg
d)
all of the choices result in yellow
5.
In rabbits, black fur (B) is dominant over brown fur (b). If a rabbit has brown fur, what can you conclude about its genotype?
a)
It is BB.
b)
It is Bb
c)
It is brown
d)
It is bb.
6.
What is the phenotype of the offspring? (A-Brown hair; a-blond hair)
a)
50 % Brown Hair and 50% Blond Hair
b)
25 % Brown Hair and 75% Blond Hair
c)
75 % Brown Hair and 25% Blond Hair
d)
0% Brown Hair and 100% Blond Hair
7.
What percent of offspring will have the recessive trait?
a)
25
b)
50
c)
75
d)
100
8.
What is a phenotype
a)
The genetic make up (code)
b)
The physical trait
9.
Which of the following genotypes is homozygous dominant?
a)
A
b)
Aa
c)
AA
d)
aa
10.
What is the probability of heterozygous offspring?
a)
25%
b)
50%
c)
0%
d)
100%
11.
What is the probability of homozygous dominant offspring?
a)
0%
b)
100%
c)
50%
d)
25%
12.
Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?
a)
0 %
b)
25%
c)
50%
d)
75%
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