CHP 13 AP BIO

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cuz213022
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120159
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CHP 13 AP BIO
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2011-12-01 20:29:16
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CHP 13 AP BIO
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CHP 13 AP BIO
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  1. Eukaryotic sexual life cycles show tremendous variation. Of the following elements, which do all sexual life cycles have in common?
    I. alternation of generations
    II. meiosis
    III. fertilization
    IV. gametes
    V. spores
    A. I, IV, and V
    B. II, III, and IV
    C. II, IV, and V
    D. I, II, and IV
    E. all of the above
    B. II, III, and IV
    (this multiple choice question has been scrambled)
  2. Which of the following is missing from the life cycle listed below?
    zygote-sporophhyte-spore-gametophyte-gametes-_________-zygote
    A. meiosis
    B. fertilization
    C. synapsis
    D. karyotype
    E. mitosis
    B. fertilization
    (this multiple choice question has been scrambled)
  3. The phases of meiosis that produce the most genetic variation from crossing-over and independent assortment are
    A. anaphase I and prophase II
    B. prophase I and anaphase I
    C. prophase I and telophase II
    D. prophase II and anaphase II
    E. metaphase I and telophase II
    B. prophase I and anaphase I
    (this multiple choice question has been scrambled)
  4. Crossing-over occurs during which phase of meiosis?
    A. prophase I
    B. anaphase I
    C. telophase I
    D. metaphase II
    E. prophase II
    A. prophase I
    (this multiple choice question has been scrambled)
  5. 1. formation of four new nuclei, each with half the chromosomes present in the parental nucleus
    2. alignment of tetrads at the metaphase plate
    3. separation of sister chromatids
    4. separation of the homologs; no uncoupling of the centromere
    5. synapsis; chromosomes moving to the middle of the cell in pairs
    From the descriptions above, which of the following is the order that most logically illustrates a sequence of meiosis
    A. 5,4,2,1,3
    B. 4,5,2,1,3
    C. 1,2,3,4,5
    D. 5,2,4,3,1
    E. 5,3,4,2,1
    E. 5,3,4,2,1
    (this multiple choice question has been scrambled)
  6. Which of the following occurs in meiosis but not in mitosis?
    A. chromosome replication
    B. synapsis
    C. daughter cells are produced
    D. tetrads align at metaphase plate
    E. B and D above
    E. B and D above
  7. How does the sexual life cycle increase the genetic variation in a species?
    A. both A and B are correct
    B. by allowing random fertilization
    C. A, B, and C are correct
    D. by allowing crossing over
    E. by allowing independent assortment of chromosomes
    C. A, B, and C are correct
    (this multiple choice question has been scrambled)
  8. What are the sources of genetic variation in sexual life cycles of animals?
    A. random fertilizatioin
    B. A, B, and C
    C. crossing over during meiosis
    D. B and C
    E. independent assortment of chromosomes during meiosis
    B. A, B, and C
    (this multiple choice question has been scrambled)
  9. Which of the following is true of a species that has a chromosome number of 2n=16?
    A. a gamete from this species has 8 chromosomes
    B. the species has 16 sets of chromosomes
    C. the species is diploid with 32 chromosomes
    D. there are 16 homologous pairs
    E. during the S phase of the cell cycle there will be a 32 separate chromosomes
    A. a gamete from this species has 8 chromosomes
    (this multiple choice question has been scrambled)
  10. How do cells at the completion of meiosis compare with cells that have replicated their DNA and are just about to begin meiosis?
    A. they have the same number of chromosomes and half the amount of DNA
    B. they have half the number of chromosomes and one-fourth the amount of DNA
    C. they have twice the amount of cytoplasm and half the amount of DNA
    D. they have half the amount of cytoplasm and twice the amount of DNA
    E. they have half the number of chromosomes and half the amount of DNA
    B. they have half the number of chromosomes and one-fourth the amount of DNA
    (this multiple choice question has been scrambled)

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