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WorksheetsPunnet Squares
Total questions: 11
Worksheet time: 7mins
Name
Class
Date
1.
Both parents in this Punnet square
a)
are homozygous dominant
b)
are homozygous recessive
c)
are heterozygous
d)
have blue eyes
2.
Axial flowers is dominant to terminal. What is the probabilty of offspring being terminal?
a)
1/4
b)
2/4
c)
3/4
d)
4/4
3.
The genotypic ratio here is
a)
25% blue eye 75 % brown eye
b)
BB = 25% Bb = 50% bb = 25%
c)
BB= 50 % bb = 50%
d)
All brown eye
4.
How many boxes would say BB?
a)
1
b)
2
c)
4
d)
0
5.
Brown is dominant to green. What is the probability of these parents having green offspring?
a)
1/4
b)
2/4
c)
3/4
d)
4/4
6.
What is the genotypic ratio here
a)
TT = 25% Tt= 50% tt=25%
b)
all tall
c)
TT= 75% tt = 25%
d)
Tt = 100%
7.
The dominant trait is
a)
yellow pea seeds
b)
green pea seeds
c)
there is no dominant seed
d)
Jolly green giant
8.
To be a yellow seed genotype must be
a)
aa
b)
Aa
c)
AA
d)
AA or Aa
9.
To express the recessive trait you must be
a)
homozygous dominant
b)
heterozygous
c)
alleleerific
d)
homozygous recessive
10.
A Punnet Square will
a)
tell you exactly what your offspring will look like
b)
increase the chance you pass on recessive traits
c)
predict genotypes and phenotypes in offspring
d)
have no purpose but for Taylor to give us extra assignments
11.
How do two purple flowers produce white flower offspring?
a)
They cant have white flowered offspring
b)
Both flowers are heterozygous and can pass on the white allele
c)
They are both homozygous Dominant
d)
They do not have the recessive allele in their genotype
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