Download 7th Grade Science Formative Assessment #6 Multiple Choice

7th Grade Science
Formative Assessment #6
Multiple Choice
Directions: Identify the choice that best completes the statement or answers the question.
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1. The illustration below shows that sexual reproduction involving two parent pea plants
resulted in the production of four offspring.
Which of the following statements best describes heredity in organisms that reproduce
sexually?
A. All four offspring received all of their genetic information only from Parent 1 and are
therefore identical to that parent.
B. All four offspring received all of their genetic information only from Parent 2 and are
therefore identical to that parent.
C. Each of the offspring is genetically unique and received some of its genetic information
from each parent, so each has some traits in common with each parent.
D. All four offspring are genetically unique and did not receive any of their genetic
information from either parent.
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2. The pictures below show two dogs of the same breed that have different coat colors.
The instructions that determine coat color are stored in the
A.
B.
C.
D.
cytoplasm of skin cells.
membrane of every cell.
mitochondria of hair cells.
chromosomes of every cell.
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3. The diagram below shows the chromosomes from a cell after they were photographed under
a microscope.
Which of the following questions may best be answered by studying an organism’s
chromosomes? Explain.
A.
B.
C.
D.
What sex is the organism?
Is the organism endangered?
Where is the organism’s ecosystem?
How does the organism obtain its food?
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4. The diagram below shows the X chromosomes in a female fruit fly and X and Y
chromosomes in a male fruit fly.
The two fruit flies are crossed with each other. The female offspring of the fruit flies receive
which pair of chromosomes
A.
B.
C.
D.
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5. Shelly and Jason are siblings, but Shelley looks like their father while Jason looks like their
mother. Which of the following statements best explains the difference in Shelly’s and
Jason’s features?
A. Shelly inherited a greater number of chromosomes from their father than Jason did.
B. Shelly inherited a smaller number of X chromosomes from their mother than Jason did.
C. Shelly and Jason had different mutations occur in the 46 chromosomes their inherited from
their mother and father.
D. Shelly and Jason inherited different combinations of 23 chromosomes from their mother and
23 chromosomes from their father.
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6. The Punnett square below shows the results of a genetic cross. The mother is heterozygous
for the hair shown. The father is homozygous recessive for the trait.
What can you conclude from the results of the Punnett square?
A.
B.
C.
D.
All (100%) of the offspring will have the same genotype as the mother.
All (100%) of the offspring will have the same phenotype as the father.
Half (50%) of the offspring will have the same phenotype and genotype as the father.
None (0%) of the offspring will have a genotype that is the same as the mother or the father.
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7. Use this Punnett square to answer the question.
In horses, the gene for white hair (W) is dominant to the gene for non-white hair (w). A
horse with genotype (WW) was crossed with a horse with genotype (ww), as shown in the
Punnett square.
What percentage of the offspring should be expected to have white hair?
A. 0% of the offspring will display the dominant trait.
B. 100% of the offspring will display the recessive trait.
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C. 50% of the offspring will display the dominant trait and 50% will display the recessive trait.
D. 75% of the offspring will display the dominant trait and 25% will display the recessive trait.
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8. Hawaiian happy face spiders from the island of Maui can have different markings, as shown
below. A single gene determines the markings on the spiders.
A plain spider is crossed with a patterned spider. The patterned spider is homozygous. The
pattern allele is dominant to the plain allele.
What percentage of the offspring from this cross are expected to be patterned instead of
plain?
A.
B.
C.
D.
0%
25%
50%
100%
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9. For a particular trait, the allele C is dominant over the allele c. The Punnett square below
shows the genetic
What percentage of the offspring will show the phenotype of the dominant and recessive
allele?
A. 50% will show the phenotype of the dominant allele and 25% will show the phenotype of the
recessive allele.
B. 75% will show the phenotype of the recessive allele and 25% will show the phenotype of the
dominant allele.
C. 75% will show the phenotype of the dominant allele and 25% will show the phenotype of the
recessive allele.
D. 100% will show the phenotype of the dominant allele and 0% will show the phenotype of the
recessive allele.
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10. The pedigree below shows two generations of individuals within a family. The pedigree
shows that a daughter has a genetic trait, even though neither of her parents nor her siblings
have the trait.
How can the daughter have the genetic trait if no one else in the family has it?
A.
B.
C.
D.
The trait is not inherited.
The trait is determined by a recessive allele.
The trait is determined by a dominant allele.
The trait is passed only from female to female.
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7th Grade Science Formative Assessment #6 Answer Key
Answer
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Benchmark
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Correct Answer
C
D
A
A
D
C
A
D
C
B
DOK
3
3
3
3
3
2
2
2
2
2
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