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TEST NAME: Genetics Quiz #2
TEST ID: 481952
GRADE: 07
SUBJECT: Life and Physical Sciences
TEST CATEGORY: School Assessment
Genetics Quiz #2
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Student: Class:
Date:
1. A red flowered plant (RR) is crossed with a white flowered plant (WW) and produces plants with pink flowers
(RW). If two pink flowered plants are crossed, what color offspring could be produced?
A.
red, white, and pink
B.
red and white
C.
pink and red
D.
pink and white
2. The Punnett square shows the cross between cabbage butterflies. B = white and b = yellow.
Why are all the offspring white?
A.
Both parent butterflies were dominant for white color.
B.
Only one parent butterfly carried recessive yellow traits.
C.
Only one parent carried dominant and recessive color genes.
D.
Both parent butterflies carried recessive genes for yellow color.
Genetics Quiz #2
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3. In a gerbil population, the gene for coarse hair (H) is dominant, while the gene for smooth hair (h) is
recessive. One pet store found that most of their customers want coarse­haired gerbils. Which cross
between male and female gerbils will produce the greatest number of coarse­haired offspring?
A.
B.
C.
D.
Genetics Quiz #2
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4. In a population of cats, the gene for long hair (H) is dominant and the gene for short hair (h) is recessive. A
breeder crosses a heterozygous long­haired male with a homozygous short­haired female.
In a litter of four kittens, what percentage should the breeder expect to have long hair?
A.
25%
B.
50%
C.
75%
D.
100%
5. In some plants, red flowers are dominant (R) and white flowers are recessive (r). Two plants are crossed
and the offspring have a possibility of red flowers and white flowers. Which Punnett square shows the
cross and its offspring?
A.
B.
C.
D.
Genetics Quiz #2
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6. In one breed of dog, short hair is the dominant allele (H) while long hair is the recessive allele (h).
If both parents have short hair and the offspring has long hair, which statement best describes the genetic
characteristics of the offspring?
A.
The offspring received mutated genes from both parents.
B.
The offspring received one recessive allele from each parent.
C.
The offspring received one dominant allele from each parent.
D.
The offspring received a dominant and recessive allele from both parents.
7. Allele A is dominant in mice and allele a is recessive. Two mice with the gene combination Aa breed and
produce four offspring as shown below.
Which offspring has the recessive phenotype?
A.
1
B.
2
C.
3
D.
4
8. Use the Punnett square to answer the question that follows. In a monohybrid cross between two organisms heterozygous for a particular trait (Ff), what would be the
predicted ratio of the offspring's genotypes?
A.
1 FF: 3 Ff: 1 ff
B.
1 FF: 2 Ff: 1 ff
C.
2 FF: 2 Ff
D.
3 Ff: 1 ff
Genetics Quiz #2
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9. In Holstein cattle, solid­colored coats are dominant over spotted coats. A solid­coat male is crossed with a
spotted­coat female. Some of the offspring are born with spotted coats and some with solid coats. Part A Determine the genotype of the male parent and explain your answer.
Part B
Demonstrate your answer for Part A using a Punnett square. Use the letter “H” to describe the dominant
gene.
10. In dogs, black fur (B) is dominant over blond fur (b). The following is a Punnett square showing the possible
outcome of a cross between a dog that is heterozygous (Bb) for fur color and a dog that is homozygous
recessive (bb) for fur color.
Part A: Explain what a genotype is and give an example of a genotype from this cross.
Part B: Explain what a phenotype is and give an example of a phenotype from this cross.
Genetics Quiz #2
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