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WorksheetsPunnett Squares
Total questions: 148
Worksheet time: 3hrs 25mins
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.
B = brown fur b = white fur
In the punnett square, what is the probability for white fur?
In the punnett square, what is the probability for white fur?
a)
0%
b)
25%
c)
50%
d)
75%
3.
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
4.
Complex molecule that carries genetic information that defines an organism's traits. It is stored in the nucleus.
a)
DNA
b)
protein
c)
RNA
d)
glucose nucleic acid (GNA)
5.
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
6.
AA and Aa always show up as
a)
dominant
b)
recessive
7.
aa always shows up as
a)
dominant
b)
recessive
8.
aa always shows up as
a)
dominant
b)
recessive
9.
Aa is
a)
homozygous
b)
heterozygous
10.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous
d)
DNA
11.
What ratio of the offspring from the cross shown will be homozygous recessive for the trait of tallness?
a)
0 in 4
b)
1 in 4
c)
2 in 4
d)
4 in 4
12.
Which of the following genotypes is homozygous dominant?
a)
A
b)
Aa
c)
AA
d)
aa
13.
Which of the following genotypes is heterozygous?
a)
Bb
b)
BB
c)
bb
d)
B
14.
Which of the following is homozygous dominant?
a)
Yy
b)
Y
c)
yy
d)
YY
15.
Which of the following is homozygous recessive?
a)
Tt
b)
tt
c)
TT
d)
T
16.
In a flowering plant species, red flower color (R) is dominant over white flower color (r). What is the genotype of any red-flowering plant resulting from this species?
a)
rr
b)
R
c)
RR
d)
RR or Rr
17.
What gender has an X and a Y chromosome?
a)
male
b)
female
c)
transgender
d)
all of the above
18.
What is a punnett square?
a)
graph used to predict the possible genotypes of offspring in a given cross
b)
a graph used to predict the possible birth rate of offspring.
c)
a graph used to predict the possible behavioral characteristics an offspring could have
d)
None of the above
19.
In a punnet square where are the parent alleles written?
a)
Top and inside the boxes
b)
Only on the left and right side of the boxes.
c)
outside of the boxes (top and left side)
d)
All on the top side of the boxes
20.
What is probabilty?
a)
is the mathematical chance of a specific outcome in relation to the total number of possible outcomes.
b)
is the mathematical formula to additional and subtraction of genotypes
c)
is the mathematical chance of a specific relationship between genotype and phenotype
d)
All of the above
21.
Which of the following choices demonstrates a ratio (in a punnett square).
a)
2/4 FF
b)
100/50 FF
c)
1/1 FF
d)
3/2 FF
22.
Each one of the boxes on the Punnett Square represents what probability of an offsprings' genotype?
a)
25%
b)
1%
c)
10%
d)
0%
23.
Aa, DD, bB, yy are all examples of
a)
genotypes
b)
phenotypes
24.
AA and Aa always show up as
a)
dominant
b)
recessive
25.
Which of the following genotypes is homozygous dominant?
a)
A
b)
Aa
c)
AA
d)
aa
26.
Which of the following genotypes is heterozygous?
a)
Bb
b)
BB
c)
bb
d)
B
27.
In a flowering plant species, red flower color (R) is dominant over white flower color (r). What is the genotype of any red-flowering plant resulting from this species?
a)
rr
b)
R
c)
RR
d)
RR or Rr
28.
How many alleles (letters) do each person carry for a trait?
a)
1
b)
2
c)
3
d)
4
29.
How many alleles (letters) does a child get from each parent for each trait?
a)
1
b)
2
c)
3
d)
4
30.
Dominant alleles are represented by a:
a)
Male gene
b)
lowercase letter
c)
recessive trait
d)
capital letter
31.
Genotype refers to the ...
a)
physical expression of the genes
b)
the possible combination of alleles in a gene
c)
whether an allele is dominant or recessive
d)
how an organism will appear
32.
The man who studied genetics and came up with genetics is
a)
Watson
b)
Crick
c)
Mendel
d)
Darwin
33.
A homozygous dominant dog with brown fur is crossed with a heterozygous dog with brown fur. What are the percentages of the possible genotypes?
a)
100% BB
b)
75% BB and 25%Bb
c)
50 % BB and 50% Bb
d)
50% Bb and 50% bb
34.
Squidward has light blue skin, and his genotype for this trait is Bb. Would Squidward be considered a purebred or hybrid for light blue skin?
a)
Purebred
b)
Hybrid
35.
Which of the following is a phenotype?
a)
BB
b)
Bb
c)
bb
d)
Blue eyes
36.
What is a phenotype
a)
The genetic make up (code)
b)
The physical trait
37.
the passing of genetic traits from parent to offspring.
a)
heredity
b)
trait
c)
gene
d)
allele
38.
having two of the same genes for the trait (sometimes called purebred).
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
39.
having two different genes for a trait (sometimes called hybrid).
a)
protein
b)
homozygous
c)
heterozygous
d)
genotype
40.
Two heterozygous (Tt) tall pea plants are crossed. Which describes their offspring?
a)
50% tall and 50% short
b)
75%tall and 25% short
c)
100%short
41.
one of the alternative forms of a gene that governs a characteristic, such as hair color
a)
allele
b)
gene
c)
trait
d)
DNA
42.
T4 - Based off this Punnett Square, what fraction of the offspring will have wrinkled, yellow seeds?
a)
9/16
b)
3/16
c)
1/16
d)
16/16
43.
What fraction of offspring from the cross AaBB x Aabb will be heterozygous for both traits (ex. AaBb) ?
a)
1/16
b)
1/4
c)
1/2
d)
3/16
44.
What does the prefix hetero- in heterozygous mean?
a)
same
b)
different
c)
dating
d)
human
45.
What does the prefix homo- in homozygous mean?
a)
same
b)
different
c)
dating
d)
humans
46.
Which of the following is heterozygous
a)
FF
b)
tt
c)
Gg
d)
RR
47.
Which of the following is homozygous recessive?
a)
rr
b)
AA
c)
TT
d)
Ff
48.
The physical appearance of a gene:
a)
Genotype
b)
Heredity
c)
Phenotype
d)
Allele
49.
Freckles is an example of..
a)
genotype
b)
phenotype
50.
blue eyes is an example of...
a)
Genotype
b)
Phenotype
51.
BB
a)
Genotype
b)
Phenotype
52.
The physical characteristics of an organism. (What you can see.)
a)
Genotype
b)
Phenotype
53.
B = brown fur b = white fur
In the punnett square, what is the probability for white fur?
In the punnett square, what is the probability for white fur?
a)
0%
b)
25%
c)
50%
d)
75%
54.
Mrs. Jones has blood type AA.
Mr. Jones has blood type AB.
What are the genotypes of her offspring?
Mr. Jones has blood type AB.
What are the genotypes of her offspring?
a)
100% AB
b)
25% AO; 25% BO; 25% AA; 25% AB
c)
50% AA; 50% AB
d)
100% AA
55.
If T=Tall & t=short, what is the genotypic ratio?
a)
1:3
b)
3:1
c)
1:2:1
d)
2:2
56.
Homozygous is when...
a)
the alleles are the same
b)
the alleles are different
c)
the alleles are absent
d)
the alleles are present
57.
A homozygous dominant brown mouse is crossed with a heterozygous brown mouse (tan is the recessive color).
a)
100 % tan
b)
100 % brown
c)
50 % brown and 50% tan
d)
75 % brown and 25 % tan
58.
Two heterozygous red flower (white flowers are recessive) are crossed. What is the phenotype?
a)
75% red and 25% white
b)
25% red and 75% white
c)
100 White
d)
50% red 50% red
59.
A red flower (Rr) is crossed with a white flower (rr). What is the genotype?
a)
0 RR; 0 Rr: 4 rr
b)
2 RR; 0 Rr: 2 rr
c)
4 RR; 0 Rr: 0 rr
d)
0 RR; 2 Rr: 2 rr
60.
A green pea plant (GG) is being crossed with a green pea plant (Gg). What is the phenotype?
a)
100 % rainbow
b)
50% yellow and 50% green
c)
100% green
d)
100% yellow
61.
A tall plant (TT) is crossed with a tall plant (Tt). What is the genotype?
a)
2 TT: 2 Tt: 0 tt
b)
1 TT: 2 Tt: 1 tt
c)
2 TT: 1 Tt: 1 tt
d)
0 TT: 0 Tt: 4 tt
62.
If you have a male with large wings (DD) and a female with small wings (dd). What allele stands for large wings?
a)
D
b)
d
c)
Dd
d)
dd
63.
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
64.
Which choice best represents the genotype of this cross?
a)
1 Yy: 2 yy: 0 YY
b)
2 Yy: 2 yy: 0 YY
c)
3 Yy: 1 yy: 0 YY
d)
1 Yy: 3 yy: 0 YY
65.
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
66.
In a flowering plant species, red flower color (R) is dominant over white flower color (r). What is the genotype of any red-flowering plant resulting from this species?
a)
rr
b)
R
c)
RR
d)
RR or Rr
67.
What ratio of the offspring from the cross shown will be homozygous recessive for the trait of tallness?
a)
0 in 4
b)
1 in 4
c)
2 in 4
d)
4 in 4
68.
Complex molecule that carries genetic information that defines an organism's traits. It is stored in the nucleus.
a)
DNA
b)
protein
c)
RNA
d)
glucose nucleic acid (GNA)
69.
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
70.
B = brown fur b = white fur
In the punnett square, what is the probability for white fur?
In the punnett square, what is the probability for white fur?
a)
0%
b)
25%
c)
50%
d)
75%
71.
In the punnett square shown, what must the genotype of the missing parent be?
a)
BB
b)
Bb
c)
bb
d)
Tt
72.
In the punnett square shown, what is the genotypes of the two parents?
a)
RW and RR
b)
RW and WW
c)
RR and WW
d)
RW and RR
73.
bb crossed with BB, what is the probability of Bb?
a)
0%
b)
25%
c)
50%
d)
100%
74.
Purple (P) is dominant to the white (p).
According to the Punnett Square, what is the probability of an offspring being purple?
According to the Punnett Square, what is the probability of an offspring being purple?
a)
25%
b)
0%
c)
100%
d)
50%
75.
HH crossed with Hh. What is the probability of hh?
a)
0%
b)
25%
c)
50%
d)
100%
76.
The pictures below show two dogs. The instructions determining the color of their fur are found in their cell...
a)
cytoplasm
b)
membrane
c)
mitochondria
d)
chromosomes
77.
What is a gene?
a)
A segment of DNA
b)
A structure in the nucleus
c)
Long double helix strands that make up a chromosome
78.
In a population of cardinals, all the birds have short beaks. Their short beaks are an example of
a)
a learned behavior
b)
an inherited trait
c)
an acquired trait
d)
an inherited behavior
79.
The sex of an offspring is determined by ______________________.
a)
the mother
b)
the father
c)
the mother and the father
d)
by the environment
80.
Humans have 23 ____________ pairs.
a)
genes
b)
chromosomes
c)
enzymes
d)
DNA
81.
One trait that is ALWAYS present and causes the other traits to disappear is a ________________________
a)
recessive trait
b)
aggressive trait
c)
absent trait
d)
dominant trait
82.
Homozygous or heterozygous?
BB
BB
a)
Homozygous
b)
Heterozygous
83.
What are the two genotypes that show the DOMINANT Phenotype
a)
GG, gg
b)
GG, Gg
c)
Gg, gg
84.
A ________________________ is used to predict the possible genotype from certain parents
a)
Mendel Grid
b)
Genetic Tic Tac Toe
c)
Punnett Square
d)
Pedigree Plot
85.
How many are tall?
a)
0
b)
1
c)
2
d)
4
86.
In fruit flies, eye color is a sex-linked trait. If a male with red (R) eyes mates with a white-eyed (r) female, what percentage of their children will be white-eyed males?
a)
100%
b)
50%
c)
25%
d)
0%
87.
You get your genes from:
a)
Department Store
b)
Parents
c)
Aunt
d)
Neighbor
88.
The process of passing genetic instructions from one generation to the next is called __________.
a)
Adaptation
b)
Fertilization
c)
Genetics
d)
Heredity
e)
Eugenics
89.
Offspring receives two sets of _____________ (one from each parent)
a)
blue jeans
b)
genes
c)
machines
d)
pedigree
90.
How does your DNA compare to your parents DNA
a)
It is identical to your mothers.
b)
It is identical to your fathers.
c)
It is similar to both parents but not identical
d)
It does not have anything in common with either of them
91.
A homozygous dominant dog with brown fur is crossed with a heterozygous dog with brown fur. What are the percentages of the possible genotypes?
a)
100% BB
b)
75% BB and 25%Bb
c)
50 % BB and 50% Bb
d)
50% Bb and 50% bb
92.
The man who studied genetics and came up with genetics is
a)
Watson
b)
Crick
c)
Mendel
d)
Darwin
93.
Genotype refers to the ...
a)
physical expression of the genes
b)
the possible combination of alleles in a gene
c)
whether an allele is dominant or recessive
d)
how an organism will appear
94.
Squidward has light blue skin, and his genotype for this trait is Bb. Would Squidward be considered a purebred or hybrid for light blue skin?
a)
Purebred
b)
Hybrid
95.
An offspring will receive how many alleles from each parent to determine a specific trait?
a)
one
b)
two
c)
three
d)
five
96.
Which of the following is a phenotype?
a)
BB
b)
Bb
c)
bb
d)
Blue eyes
97.
What is a phenotype
a)
The genetic make up (code)
b)
The physical trait
98.
the passing of genetic traits from parent to offspring.
a)
heredity
b)
trait
c)
gene
d)
allele
99.
having two of the same genes for the trait (sometimes called purebred).
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
100.
having two different genes for a trait (sometimes called hybrid).
a)
protein
b)
homozygous
c)
heterozygous
d)
genotype
101.
Magda is a tall, 11 year old drummer. She has a scar on her right cheek. She is good at swimming. Which of her traits did Magda most likely inherit?
a)
height
b)
the scar
c)
ability to swim
d)
ability to play drums
102.
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
103.
An allele whose trait only shows up when no dominant allele is present.
a)
hidden allele
b)
dominant allele
c)
recessive allele
d)
present allele
104.
Two heterozygous (Tt) tall pea plants are crossed. Which describes their offspring?
a)
50% tall and 50% short
b)
75%tall and 25% short
c)
100%short
105.
What is the definition of phenotype?
a)
The physical expression of a trait
b)
The genetic combination of alleles
c)
A gene on the DNA strand
106.
What is the definition of genotype?
a)
The physical expression of a trait
b)
The genetic combination of alleles
c)
the genes on a DNA strand
107.
One form of a gene is called_______________
a)
a DNA
b)
a Phenotype
c)
a trait
d)
an allele
108.
the condensed form of DNA is called________________
a)
an allele
b)
a gene
c)
a chromosome
d)
a phenotype
109.
Where, in the eukaryotic cell, is DNA located?
a)
ribosomes
b)
nucleus
c)
E.R.
d)
cytoplasm
110.
Which of the following genotypes would be considered heterozygous?
a)
BB
b)
gg
c)
Ff
d)
TT
111.
Which of the following is a phenotype?
a)
Bb
b)
Black fur
112.
A dog gives birth to 5 puppies. What percentage of the chromosomes does each puppy share with the mother?
a)
25%
b)
50%
c)
75%
d)
100%
113.
B=brown eyes
b= blue eyes
What is true about two brothers that have brown eyes?
One has genotype BB the other Bb.
b= blue eyes
What is true about two brothers that have brown eyes?
One has genotype BB the other Bb.
a)
they have same phenotype and genotype
b)
they have different genotypes and phenotypes
c)
they have same phenotype but different genotypes
d)
they have same genotype but different phenotypes
114.
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%
115.
What does heterozygous mean?
a)
An organism that has the same genes for a trait (TT or tt)
b)
An organism that has different genes for a trait (Tt)
c)
When neither gene is fully dominant; offspring is a mixture of both
d)
the different forms of a trait (hair color--> brown, blonde, red
116.
Heredity is the passing of traits from _____________________ to _____________________
a)
predators to prey
b)
water to rain
c)
parents to offspring
d)
fungi to protists
117.
If a child has red hair, they inherited a certain _______________ from their parents.
a)
ratio
b)
trait
c)
probability
d)
sex chromosome
118.
One trait that is ALWAYS present and causes the other traits to disappear is a ________________________
a)
recessive trait
b)
aggressive trait
c)
absent trait
d)
dominant trait
119.
True or False: Recessive traits are ALWAYS present
a)
True
b)
False
120.
A ___________________ is a relationship between two numbers
a)
genetic
b)
trait
c)
ratio
d)
cycle
121.
______________________ is the mathematical chance that something will happen
a)
division
b)
selective breeding
c)
ratio
d)
probability
122.
_____________________ are cells that join to make offspring
a)
speed cells
b)
sex cells
c)
pea cells
d)
pedigree cells
123.
When humans breed purebred dogs to look a certain way and have traits that they like, this is an example of ___________________________
a)
Probably Breeding
b)
Sectional Breeding
c)
Selective Breeding
d)
Suspended Breeding
124.
Emily has brown hair. Which is most likely a true statement about Emily?
a)
Emily’s favorite color is brown.
b)
Emily has a parent with brown hair.
c)
Emily’s older brother has brown hair.
125.
James and his father are both great athletes. Which characteristic did James most likely learn from his father?
a)
height and weight
b)
fast swimming stroke
c)
large feet and hands
d)
muscular body structure
126.
Which trait does a puppy inherit from its parents?
a)
fur color and pattern
b)
obedience to commands
c)
food brand preferences
d)
affection for a specific home
127.
A litter of kittens have traits that are similar to both the mother cat and the father cat. Which best explains this situation?
a)
The kittens are provided the same kind of milk from their mother as they grow.
b)
The kittens inherit some of their traits from their mother and some from their father.
c)
The kittens are kept at the same temperatures by their mother when they are first born.
d)
The kittens are taught by their parents to have similar traits.
128.
Which statement best supports why many offspring look similar to their parents?
a)
Offspring inherit characteristics from one parent.
b)
Offspring inherit characteristics from both parents.
c)
Parents choose which characteristics to pass on to their offspring.
d)
Parents choose to change their appearance to match that of their offspring.
129.
Which feature of a bird is controlled only by inherited genes?
a)
diet
b)
habitat
c)
beak shape
d)
life span
130.
Bob is a tall, slender young man with red hair and blue eyes. Which couple would most likely be Bob’s parents?
a)
a slender, red-haired father and a tall, blue-eyed mother
b)
a tall green-eyed father with long brown hair and a short, brown-haired mother
c)
a short, green-eyed, black-haired father and a tall, brown haired, brown-eyed mother
d)
a short, plump brown-haired father with freckles and a short, blue-eyed red-haired mother
131.
Mark is asked to write a brief description of himself for the school paper. Which characteristic mentioned in his description has Mark most likely inherited from his parents?
a)
height
b)
favorite food
c)
interest in sports
d)
ability to speak a foreign language
132.
Which is an example of a learned characteristic?
a)
color of a dog’s fur
b)
color blindness of a person
c)
ability of a mouse to run a maze
d)
a person’s ability to roll their tongue
133.
Which of these is an inherited trait?
a)
dimples
b)
long hair
c)
favorite color
d)
driving ability
134.
Dominant or recessive?
tt
tt
a)
Dominant
b)
Recessive
135.
Dominant or recessive?
Dd
Dd
a)
Dominant
b)
recessive
c)
neither
d)
homozygous
136.
The physical appearance of a gene:
a)
Genotype
b)
Heredity
c)
Phenotype
d)
Allele
137.
Which of the following pairs is homozygous dominant?
a)
Hh
b)
pp
c)
HH
d)
aa
138.
Which of the following is heterozygous?
a)
Hh
b)
gg
c)
HH
d)
GG
139.
Jackie is homozygous recessive for having dimples (D). What is her genotype?
a)
pp
b)
Dd
c)
dd
d)
DD
140.
He is known as the father of modern day genetics.
a)
Gregory Mendel
b)
Greg Mendel
c)
Gregor Mendel
d)
Grace Mendel
141.
Which of the following alleles is homozygous recessive?
a)
Tt
b)
tt
c)
TT
d)
T
142.
Dominant alleles are represented by a:
a)
Male gene
b)
lowercase letter
c)
recessive trait
d)
capital letter
143.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous
d)
DNA
144.
Which of the following is NOT a genotype?
a)
heterozygous
b)
a trait
c)
Bb
d)
homozygous recessive
145.
AA and Aa always show up as
a)
dominant
b)
recessive
146.
aa always shows up as
a)
dominant
b)
recessive
147.
Aa is
a)
homozygous
b)
heterozygous
148.
having two different genes for a trait (sometimes called hybrid).
a)
protein
b)
homozygous
c)
heterozygous
d)
genotype
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