Biology Chapter 13 - 2019 Batch

20 Questions | Total Attempts: 158

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Biology Chapter 13 - 2019 Batch - Quiz

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Questions and Answers
  • 1. 
    Which of the following is a true statement about sexual vs. asexual reproduction?
    • A. 

      Asexual reproduction, but not sexual reproduction, is characteristic of plants and fungi.

    • B. 

      In sexual reproduction, individuals transmit 50% of their genes to each of their offspring.

    • C. 

      In asexual reproduction, offspring are produced by fertilization without meiosis.

    • D. 

      Sexual reproduction requires that parents be diploid.

    • E. 

      Asexual reproduction produces only haploid offspring.

  • 2. 
    Which of the following defines a genome?
    • A. 

      Representation of a complete set of a cell's polypeptides

    • B. 

      The complete set of an organism's polypeptides

    • C. 

      The complete set of a species' polypeptides

    • D. 

      The complete set of a species' polypeptides

    • E. 

      The complete set of an organism's genes

  • 3. 
    The human X and Y chromosomes
    • A. 

      Are both present in every somatic cell of males and females alike.

    • B. 

      Are of approximately equal size and number of genes.

    • C. 

      Are almost entirely homologous, despite their different names

    • D. 

      Include genes that determine an individual's sex

    • E. 

      Include only genes that govern sex determination.

  • 4. 
    Which of the following is true of a species that has a chromosome number of 2n = 16?
    • A. 

      The species is diploid with 32 chromosomes per cell.

    • B. 

      The species has 16 sets of chromosomes per cell.

    • C. 

      Each cell has eight homologous pairs.

    • D. 

      During the S phase of the cell cycle there will be 32 separate chromosomes.

    • E. 

      A gamete from this species has four chromosomes.

  • 5. 
    Which of these statements is false?
    • A. 

      In humans, each of the 22 maternal autosomes has a homologous paternal chromosome.

    • B. 

      In humans, the 23rd pair, the sex chromosomes, determines whether the person is female (XX) or male (XY).

    • C. 

      Single, haploid (n) sets of chromosomes in ovum and sperm unite during fertilization, forming a diploid (2n), single-celled zygote.

    • D. 

      At sexual maturity, ovaries and testes produce diploid gametes by meiosis.

    • E. 

      Sexual life cycles differ with respect to the relative timing of meiosis and fertilization.

  • 6. 
    Referring to a plant's sexual life cycle, which of the following terms describes the process that leads directly to the formation of gametes?
    • A. 

      Sporophyte meiosis

    • B. 

      Gametophyte mitosis

    • C. 

      Gametophyte meiosis

    • D. 

      Sporophyte mitosis

    • E. 

      Alternation of generations

  • 7. 
    At which stage of mitosis are chromosomes usually photographed in the preparation of a karyotype?
    • A. 

      Prophase

    • B. 

      Metaphase

    • C. 

      Anaphase

    • D. 

      Telophase

    • E. 

      Interphase

  • 8. 
    A triploid cell contains three sets of chromosomes. If a cell of a usually diploid species with 42 chromosomes per cell is triploid, this cell would be expected to have which of the following?
    • A. 

      63 chromosomes in 31 1/2 pairs

    • B. 

      63 chromosomes in 21 sets of 3

    • C. 

      63 chromosomes, each with three chromatids

    • D. 

      21 chromosome pairs and 21 unique chromosomes

  • 9. 
    Which life cycle stage is found in plants but not animals?
    • A. 

      Gamete

    • B. 

      Zygote

    • C. 

      Multicellular diploid

    • D. 

      Multicellular haploid

    • E. 

      Unicellular diploid

  • 10. 
    Homologous chromosomes move toward opposite poles of a dividing cell during
    • A. 

      Mitosis

    • B. 

      Meiosis I

    • C. 

      Meiosis II

    • D. 

      Fertilization

    • E. 

      Binary fission

  • 11. 
    Meiosis II is similar to mitosis in that
    • A. 

      Sister chromatids separate during anaphase.

    • B. 

      DNA replicates before the division.

    • C. 

      The daughter cells are diploid.

    • D. 

      Homologous chromosomes synapse.

    • E. 

      The chromosome number is reduced

  • 12. 
    If the DNA content of a diploid cell in the G1 phase of the cell cycle is x, then the DNA content of a single cell at metaphase of meiosis II would be
    • A. 

      0.25x

    • B. 

      0.5x

    • C. 

      X

    • D. 

      2x

    • E. 

      4x

  • 13. 
    How many different combinations of maternal and paternal chromosomes can be packaged in gametes made by an organism with a diploid number of 8 (2n = 8)?
    • A. 

      2

    • B. 

      4

    • C. 

      8

    • D. 

      16

    • E. 

      32

  • 14. 
    When does the synaptonemal complex disappear?
    • A. 

      Late prophase of meiosis I

    • B. 

      During fertilization or fusion of gametes

    • C. 

      Early anaphase of meiosis I

    • D. 

      Mid-prophase of meiosis II

    • E. 

      Late metaphase of meiosis II

  • 15. 
    Chromatids are separated from each other.
    • A. 

      The statement is true for mitosis only.

    • B. 

      The statement is true for meiosis I only.

    • C. 

      The statement is true for meiosis II only

    • D. 

      The statement is true for mitosis and meiosis I.

    • E. 

      The statement is true for mitosis and meiosis II.

  • 16. 
    In this picture, A represent
    • A. 

      Haploid unicellular

    • B. 

      Haploid multicellular

    • C. 

      Gametes

    • D. 

      Spores

    • E. 

      None of the above

  • 17. 
    Which phase of meioses this picture shows
    • A. 

      Anaphase l

    • B. 

      Metaphase ll

    • C. 

      Metaphase l

    • D. 

      Anaphase ll

    • E. 

      Metaphase

  • 18. 
    In this picture A represent
    • A. 

      Alleles

    • B. 

      Locus

    • C. 

      Cohesion

    • D. 

      Synaptonemal

    • E. 

      Genes

  • 19. 
    A tetrad includes which of the following sets of DNA strands?
    • A. 

      Two single-stranded chromosomes that have synapsed

    • B. 

      Two sets of sister chromatids that have synapsed

    • C. 

      Four sets of sister chromatids

    • D. 

      Four sets of unique chromosomes

    • E. 

      Eight sets of sister chromatids

  • 20. 
    Which diagram represents anaphase I of meiosis?
    • A. 

      I

    • B. 

      II

    • C. 

      IV

    • D. 

      V

    • E. 

      VI

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