WorksheetsFun with Punnet End of Course Exam Prep
Total questions: 20
Worksheet time: 39mins
Name
Class
Date
1.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous
d)
DNA
2.
Dominant alleles are represented by a:
a)
Male gene
b)
lowercase letter
c)
recessive trait
d)
capital letter
3.
How many boxes would say BB?
a)
1
b)
2
c)
4
d)
0
4.
What is the genotypic ratio here
a)
TT = 25% Tt= 50% tt=25%
b)
all tall
c)
TT= 75% tt = 25%
d)
Tt = 100%
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.
If B = brown hair and b = blonde hair, what is the probability of brown hair?
a)
25%
b)
50%
c)
0%
d)
75%
7.
What allele combination should go in the missing box?
a)
AA
b)
Aa
c)
aa
d)
none of these
8.
Josh has a widow's peak (Ww). His mother also has a widow's peak (WW). His father does not have a widow's peak (ww). What does this indicate about the heredity of Josh's widow's peak?
a)
He received both of his alleles for this particular trait from his father.
b)
He received both of his alleles for this particular trait from his mother.
c)
He received a dominant allele from his father and a recessive allele from his
mother.
mother.
d)
He received a dominant allele from his mother and a recessive allele from
his father.
his father.
9.
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
10.
BB, Bb, and bb are examples of _________________
a)
Dominant
b)
Homozygous
c)
Genotype
d)
Phenotype
11.
bb is a _________________ genotype
a)
Dominant
b)
Homozygous
c)
Genotype
d)
Phenotype
12.
Black hair color is dominant (B) to white hair color (b) in mice. Determine the phenotypic ratio for the offspring of a heterozygous black mouse and a white mouse.
a)
4 Black: 0 White
b)
3 Black: 1 White
c)
2 Black: 2 White
d)
0 Black: 4 White
13.
Genetic crosses involving a particular type of flower exhibit complete dominance with respect to petal color. Red (R) is dominant to white (r). Using the Punnett square, what is the expected percentage of offspring that will have white flowers from a cross of parent flowers with a genotype of Rr.
a)
0%
b)
25%
c)
50%
d)
100%
14.
What do you call the non-Mendelian inheritance pattern where neither trait is dominant and the traits appear to blend together in heterozygous individuals?
a)
Codominance
b)
Incomplete dominance
c)
Polygenic traits
15.
What do you call the non-Mendelian inheritance pattern where both traits are dominant and both appear in the organism with heterozygous genotype?
a)
Codominance
b)
Incomplete dominance
c)
Polygenic traits
16.
What pattern of inheritance is shown in this image?
a)
Codominance
b)
Incomplete dominance
c)
Polygenic traits
17.
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
18.
The passing of traits from parent to offspring
a)
Heredity
b)
Genetics
c)
Hybrid
d)
Probability
19.
which is heterozygous ?
a)
Tt
b)
TT
20.
what predicts the outcome of offspring
a)
genetic engineering
b)
punnet square
c)
probability
100 %
