WorksheetsPunnett Square Review
Total questions: 25
Worksheet time: 21mins
Name
Class
Date
1.
Aa, DD, bB, yy are all examples of
a)
genotypes
b)
phenotypes
2.
AA and Aa always show up as
a)
dominant
b)
recessive
3.
Which of the following genotypes is homozygous dominant?
a)
A
b)
Aa
c)
AA
d)
aa
4.
Which of the following genotypes is heterozygous?
a)
Bb
b)
BB
c)
bb
d)
B
5.
What you see, or the physical appearance.
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
6.
Homozygous is when...
a)
the alleles are the same
b)
the alleles are different
c)
the alleles are absent
d)
the alleles are present
7.
Heterozygous is when...
a)
the alleles are the same
b)
the alleles are different
c)
the alleles are absent
d)
the alleles are present
8.
If Spongebob is homozygous for a yellow body (yellow dominant over blue), then his genotype would be ...
a)
Yy
b)
yy
c)
YY
d)
Yb
9.
The dominant trait as seen in this punnett square is
a)
yellow pea seeds
b)
green pea seeds
c)
there is no dominant seed
d)
Jolly green giant
10.
What are the possible genotypes for this cross?
a)
TT = 25% Tt= 50% tt=25%
b)
all tall
c)
TT= 75% tt = 25%
d)
Tt = 100%
11.
Which of the following alleles is homozygous recessive?
a)
Tt
b)
tt
c)
TT
d)
T
12.
the condensed form of DNA is called________________
a)
an allele
b)
a gene
c)
a chromosome
d)
a phenotype
13.
Where, in the eukaryotic cell, is DNA located?
a)
ribosomes
b)
nucleus
c)
E.R.
d)
cytoplasm
14.
Which of the following is a phenotype?
a)
Bb
b)
Black fur
15.
What is the percentage of offspring that have green pods?
a)
100%
b)
75%
c)
50%
d)
25%
16.
What is the phenotype of the heterozygous parent in the punnett square?
a)
green
b)
yellow
c)
hybrid
d)
purebred
17.
This image shows a...
a)
Punnett Square
b)
Phenotype
c)
Genotype
d)
Dominant allele
18.
HOMOZYGOUS
a)
same
b)
different
19.
HETEROZYGOUS
a)
same
b)
different
20.
A segment found on DNA is called a ______.
a)
Gene
b)
Jean
c)
Billie Jean
d)
Chromosome
21.
______ are responsible for the inherited characteristics that distinguish one individual from another.
a)
Genes
b)
Jean
c)
Billie Jean
d)
Chromosome
22.
Chromosomes are made of
a)
DNA
b)
RNT
c)
WWE
d)
DMA
23.
DNA is made of
a)
Genes
b)
Jeans
c)
Billie Jeans
d)
Chromosomes
24.
What are the possible genotypes for this cross?
a)
TT = 25% Tt= 50% tt=25%
b)
all tall
c)
TT= 75% tt = 25%
d)
Tt = 100%
25.
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
100 %
