Chapter 10 Review

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Chapter 10 Review
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1. Which represents a polyploid organism?

1. 1/2n
2. 1 1/2n
3. 2n
4. 3n

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2. How many chromosomes would a cell have during
metaphase 1 of meiosis if it has 12 chromosomes
during interphase?

1. 6
2. 12
3. 24
4. 36

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3. If a black guinea pig (Bb) were crossed with
a white guinea pig (bb), what would be the
resulting phenotypic ratio?

1. 0 black 1 white
2. 1black 0 white
3. 1 black 1 white
4. 3 black 1 white

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4. Which is not a characteristic of homologous
chromosomes?

1. Homologous chromosomes have the same length.
2. Homologous chromosomes have the same centromere
   position.
3. Homologous chromosomes have the exact same type
   of allele at the same location.
4. Homologous chromosomes pair up during meiosis I.

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5. In garden peas, purple flowers (P) are
dominant to white flowers (p), and tall plants
(T) are dominant to short plants (t). If a
purple tall plant (PpTt) is crossed with a white
short plant (pptt), what is the resulting
phenotypic ratio?

• 1111 B. 3 purple tall3 purple short
• C. 9331 D. All purple tall

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6. Which does not contribute to genetic
variation?

1. Chromosome number
2. Crossing over
3. Meiosis
4. Random mating

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7. Which concept is considered an exception to
Mendels law of independent assortment?

1. Crossing over
2. Gene linkage
3. Polyploidy
4. Law of segregation

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8. For the housefly with six pairs of
chromosomes, how many possible combinations of
gametes can be produced by the random linking up
of pairs in meiosis?

1. 32
2. 48
3. 64
4. 120

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9. In a cell undergoing meiosis, during which
stage do the sister chromatids separate from each
other?

1. Anaphase I
2. Anaphase II
3. Telophase I
4. Telophase II

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10. How many chromosomes does a body cell have?

1. 2
2. 23
3. 42
4. 46

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11. What is the term for genes located close to
each other on the same chromosome?

1. Crossing over
2. Gene linkage
3. Homologous chromosomes
4. Sister chromatids

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B brown hair b blond hair

• What is the genotype of a woman with homozygous
  brown hair?
• Bb
• BB
• Bb
• None of the above

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B brown hair b blond hair

• What is the phenotype of a woman that is bb?
• Brown hair
• Homozygous recessive
• Blond hair
• Homozygous dominant

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14. What law states that alleles must separate
upon being passed on?

1. Mendels monohybrid cross
2. Law of Independent Assortment
3. Law of Segregation
4. Mendels dihybrid cross

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15. Passing on the dominant allele for hair color
and the recessive allele for eye color is an
example of the

• Mendels monohybrid cross
• Law of Independent Assortment
• Law of Segregation
• Mendels dihybrid cross

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16. What process does not increase genetic
variation?

1. Meiosis
2. Crossing over
3. Mitosis
4. Random fusion of sperm/egg

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17. An organism that has a different form of a
trait from each parent is called a

1. Homozygote
2. Purebred
3. Hybrid
4. fluke

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18. If the diploid number of a fruitfly is 26,
what is the haploid number?

1. 26
2. 0
3. 22
4. 13

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For the remainder questions, list either A for
Mitosis, or B for Meiosis

• Crossing over occurs.
• Mitosis
• Meiosis

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20. 2 diploid cells are formed

1. Mitosis
2. Meiosis

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21. Occurs in gametes

1. Mitosis
2. Meiosis

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22. Associated with asexual reproduction.

1. Mitosis
2. Meiosis

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23. Associated with growth

1. Mitosis
2. Meiosis

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24. Could occur in bone cells

1. Mitosis
2. Meiosis

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25. Daughter cells are not identical to parent
cells

1. Mitosis
2. Meiosis

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26. 1 division occurs

1. Mitosis
2. Meiosis

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27. Chromosome number is ½ the original

1. Mitosis
2. Meiosis

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28. 4 daughter cells are formed

1. Mitosis
2. Meiosis

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29. Involved in repair of cells

1. Mitosis
2. Meiosis

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30. Involved in formed new and diverse organism

1. Mitosis
2. Meiosis

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31. A white mouse whose parents are both white
produces only brown offspring when mated with a
brown mouse. The white mouse is most probably

1. Homozygous recessive
2. Heterozygous
3. Homozygous dominant
4. haploid

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32. A dogs phenotype can be determined by

1. Looking at the dogs parents
2. Examining the dogs chromosomes
3. Mating the dog and examining its offspring
4. Looking at the dog

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33. Crossing over results in a

1. Female genotype
2. Male genotype
3. Genetic recombination
4. Phenotype replication