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WorksheetsPunnett Square
Total questions: 125
Worksheet time: 4hrs 46mins
What belongs in the last box?
RR
Rr
rr
ff
In the punnett square below, what belongs in the missing square
Look at the punnett square shown. What allele pair would replace the "?"
WW
Ww
ww
What belongs in Box 4?
Y
YY
Yy
yy
Look at the punnett square. What is the probability that the offspring would have homozygous alleles for the trait?
100%
75%
50%
25%
0%
What is the probability & phenotype of the offspring? (A-Brown hair; a-blond hair)
50% Brown Hair and 50% Blond Hair
25 % Brown Hair and 75% Blond Hair
75 % Brown Hair and 25% Blond Hair
0% Brown Hair and 100% Blond Hair
Fill in the Yellow Box
Bb
BB
bb
Which of the following allele pairs is heterozygous?
RR
ss
In the punnett square, what is the probability for white fur?
In the punnett square below, what belongs in the missing square
A chart that shows all the possible combinations of alleles that can result from a genetic cross
dominant allele
codominance
probability
Punnett Square
An organism's physical appearance or visible traits. (what it looks like)
phenotype
genotype
An organism's genetic makeup, or allele combination. The letters we use to show the allele combination.
phenotype
genotype
B = brown fur b = white fur
In the Punnett square, what is the probability for white fur?
0%
25%
50%
75%
tt
Dd
P= purple
p= white
In the punnett square, what is the probability for white fur?
BB
In the punnett square below, what belongs in the missing square
The genotype for a yellow plant is...
In the punnett square, what is the probability for white fur?
Green peas are dominant to yellow peas what letter would we use to represent the allele for green peas
G
g
Y
y
Green peas are dominant to yellow peas what letter would we use to represent the allele for yellow peas
G
g
Y
y
Purple flowers are dominant to white flowers. What letter would we use for the purple allele
P
p
W
w
Purple flowers are dominant to white flowers. What letter would we use for the white allele
P
p
W
w
Brown fur is dominant to Gray fur. What letter would we use for the gray allele
B
b
G
g
Red flowers are dominant to Blue flowers cross a Heterozygous flower with a homozygous recessive flower. Choose the correct parent cross below
Rr with rr
Rr with RR
Rb with bb
Rr with bb
Hairy guinea pigs are dominant to hairless guinea pigs. Cross a purbred recessive guinea pig with a purbred dominant guinea pig
Hh with Hh
hh with HH
Hg with gg
Hh with gg
Gray mice are dominant to white mice cross a Hybrid mouse with a Hybrid mouse
Gw with Gw
gw with gw
GG with GG
Gg with Gg
Aqua martians are dominant to yellow martians. Cross a yellow martian with a Heterozygous martian
YY with Yy
aa with Aa
YY with Ay
AA with Aa
Tall pea plant are dominant to short pea plants cross a heterozygous pea plant with a short pea plant
Ts with ss
Tt with Tt
Tt with tt
Ts with tt
What genotype goes in the missing square
aa
Aa
AA
none of the above
HH
Hh
hh
none of the above
What genotype goes in the missing square
Aa
aa
AA
none of the above
Rr
rr
RR
none of the above
gg
GG
Gg
none of the above
Gray fur is dominant to white fur. What is the probability of having the purebred recessive genotype
25%
50%
75%
100%
Gray fur is dominant to white fur what is the probability of having Gray fur
25%
50%
75%
100%
Red flowers are dominant to blue flowers. What is the probability of being Homozygous recessive
25%
50%
75%
100%
Red flowers are dominant to blue flowers what is the probability of having red flowers
25%
50%
75%
1100%
Hairy guinea pigs are dominant to hairless guinea pigs. What is the probability of having hairless guinea pigs
25%
50%
75%
100%
Webbed fingers (F) are dominant over nonwebbed fingers (f). If parent A (Ff) and parent B (Ff) have children, which of the following are true? Select the correct Genotype and Phenotype outcomes.
Phenotypes: 75% chance of having webbed fingers and 25% chance of not.
Phenotypes: 100% chance of having webbed fingers and 0% chance of not.
Phenotypes: 25% chance of having webbed fingers and 75% chance of not
Genotypes: FF 25%, Ff 50%, ff 25%
Genotypes: FF 75%, Ff 50%, ff 25%
Brown eyes (B) tend to be dominant whereas blue eyes (b) tend to be recessive. Parents with heterozygous genes want to know: what is the likelihood of them having a child with blue eyes?
0%
25%
75%
100%
Two heterozygous (Tt) tall pea plants are crossed. Tall (T) is dominant. Short (t) is recessive. Which is the likelihood of each phenotype?
50% tall and 50% short
75% tall and 25% short
100% short
Which of the following would complete this Punnett Square?
aa
AA
Aa
Brown eyes are dominant (B) to blue (b). If Parent A (bb) and Parent B (Bb) have a child, what is the likelihood that the child will have brown eyes?
25%
50%
75%
100%
Select TWO answers. Which are the missing parts?
BB
bb
Bb
Which of the following must be the father's genotype?
RR
Rr
rr
If the father is homozygous recessive for dimples, what must the mother be for this Punnett Square?
Dd (Heterozygous)
DD (Homozygous Dominant)
dd (Homozygous Recessive)
The Austrian Monk who is deemed the Father of Genetics?
John Hammond
Gregor Mendel
Isaac Newton
Mr. Betenson
In a heterozygous genotype, the ___________ allele takes over in the phenotype.
recessive
dominant
lower case letter
both
What type of inheritance pattern is shown here?
incomplete dominance
dominant
recessive
codominance
In plants, tall (T) is dominant to short (t). Perform the following cross: Tt x Tt. What is the probability of producing a short plant?
0%
25%
75%
100%
What is the passing of genetic traits from parent to offspring called?
heredity
gene
trait
allele
Having two different genes for a trait is sometimes called hybrid. What else can this be called?
protein
homozygous
codominant
heterozygous
What is a single piece of coiled DNA found in the cells that contains genes that encode traits?
gene
trait
chromosome
DNA
When two traits are blended together, what is this called?
incomplete dominance
codominance
heterozygous
homozygous
What type of inheritance pattern is shown here?
incomplete dominance
dominant
recessive
codominance
AA and Aa always show up as ---
dominant.
recessive.
B = brown fur b = white fur
In the punnett square, what is the probability for white fur?
0%
25%
50%
75%
In a heterozygous genotype, the ___________ allele takes over in the phenotype.
recessive
dominant
both
Which of the following is a phenotype?
Aa
red hair
heterozygous
DNA
I don't know.
Brown (B) is dominant to white (b) for fur color in rabbits. Complete a Punnett Square with parents of Bb and Bb.
The physical expression of a trait is the
Genotype
Phenotype
Heterozygous
Homozygous
The genetic makeup of an organism is the
Genotype
Phenotype
Heterozygous
Homozygous
When an organism has two of the SAME alleles (gene versions) for a trait, they are _________ for the trait.
Genotype
Phenotype
Heterozygous
Homozygous
When an organism has two of the DIFFERENT alleles (gene versions) for a trait, they are _________ for the trait.
Genotype
Phenotype
Heterozygous
Homozygous
Red flowers (R) is dominant to white flowers (r). What percent of the offspring could have red flowers?
25%
50%
75%
100%
Red flowers (R) is dominant to white flowers (r). What percent of the offspring could have white flowers?
25%
50%
75%
100%
Brown fur (B) is dominant to white fur (b). What percent of the offspring could have brown fur?
25%
50%
75%
100%
Brown fur (B) is dominant to white fur (b). What percent of the offspring could have white fur?
0%
25%
50%
75%
Brown fur (B) is dominant to white fur (b). What percent of the offspring could have white fur?
0%
25%
50%
75%
