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Biology - Chapter 5 Test

30 Questions
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  • 1. 
    An example of a species characteristic in humans would be
    • A. 

      Blue eyes

    • B. 

      Blond hair

    • C. 

      Freckles

    • D. 

      Thumbs

  • 2. 
    Hair and eye color, body build, and facial features are inherited and are called
    • A. 

      Human characteristics

    • B. 

      Racial characteristics

    • C. 

      Individual characteristics

    • D. 

      Species characteristics

  • 3. 
    Section of a chromosome that code for a trait are called
    • A. 

      Chromatids

    • B. 

      Genes

    • C. 

      Traits

    • D. 

      Centromeres

  • 4. 
    Asexual reproduction takes place in all the following except
    • A. 

      Budding

    • B. 

      Euploidy

    • C. 

      Fragmentation

    • D. 

      Spores

  • 5. 
    The human diploid chromosome number is
    • A. 

      2

    • B. 

      23

    • C. 

      24

    • D. 

      46

  • 6. 
    The exchange of genetic material between homologous chromosomes during meiosis is
    • A. 

      Incomplete dominance

    • B. 

      Segregation

    • C. 

      Crossing over

    • D. 

      Oogenesis

  • 7. 
    Which of these is a difference between mitosis and meiosis?
    • A. 

      The number of consecutive cell divisions

    • B. 

      The presence or absence of spindles

    • C. 

      The attachment between DNA duplicates

    • D. 

      The coiling of the chromosomes

  • 8. 
    When two haploid gametes unite, they form a diploid cell called a/an
    • A. 

      Ovum

    • B. 

      Isogamete

    • C. 

      Sperm

    • D. 

      Zygote

  • 9. 
    The principle of genetics involved when one gene in a pair masks or prevents the expression of the other is called the principle of
    • A. 

      Dominance and recessiveness

    • B. 

      Segregation

    • C. 

      Independent assortment

    • D. 

      Unit characteristics

  • 10. 
    Possessing a pair of different alleles for one trait is the
    • A. 

      Monohybrid condition

    • B. 

      Dihybrid condition

    • C. 

      Homozygous condition

    • D. 

      Heterozygous condition

  • 11. 
    A chart showing the phenotype of the individuals in several generations of a family is a
    • A. 

      Karotype

    • B. 

      Pedigree

    • C. 

      Punnett Square

    • D. 

      Venn Diagram

  • 12. 
    A test cross involves mating an organism that has an unknown genotype but dominant phenotype with
    • A. 

      An incompletely dominant organism

    • B. 

      A homozygous dominant organism

    • C. 

      A homozygous recessive organism

    • D. 

      A heterozygous recessive organism

  • 13. 
    A condition in which both alleles of a heterozygous condition is expressed is
    • A. 

      Crossing over

    • B. 

      Incomplete dominance

    • C. 

      Codominance

    • D. 

      Sex-linked trait

  • 14. 
    In the case of a sex-linked trait, which of the following could not happen?
    • A. 

      A mother passes the gene on to her son

    • B. 

      A mother passes the gene on to her daughter

    • C. 

      A father passes the gene on to his son

    • D. 

      A father passes the gene on to his daughter

  • 15. 
    A carrier of a sex-linked trait has the gene and exhibits the physical characteristics of the trait.
    • A. 

      True

    • B. 

      False

  • 16. 
    In codominance, the individual expresses both alleles with no blending of traits.
    • A. 

      True

    • B. 

      False

  • 17. 
    A gene is a section of DNA that can produce a particular polypeptide chain of amino acids and thereby cause a trait.
    • A. 

      True

    • B. 

      False

  • 18. 
    A histone is a protein that helps protect and maintain the shape of a chromosome.
    • A. 

      True

    • B. 

      False

  • 19. 
    For a simple dominant and recessive characteristic, a cross between organisms of genotypes AA and aa will produce offspring that all have the same genotype.
    • A. 

      True

    • B. 

      False

  • 20. 
    For a simple dominant and recessive characteristic, a cross between organisms of genotypes Bb and Bb will produce offspring that all have the same phenotype.
    • A. 

      True

    • B. 

      False

  • 21. 
    • A. 

      True

    • B. 

      False

  • 22. 
    The scientist who established the first laws and principles of heredity was
  • 23. 
    The study of heredity is called
  • 24. 
    In which phase of mitosis do the chromosomes begin to coil in the nucleus?
  • 25. 
    In which phase of mitosis do the kinetochore fibers pull the sister chromatids apart?
  • 26. 
    In which phase of mitosis are the sister chromatids aligned at the center of the mitotic spindle?
  • 27. 
    In what phase of mitosis does the centrosome divide and migrate to the opposite poles?
  • 28. 
    What is the first phase of the cell cycle?
  • 29. 
    What is the second phase of the cell cycle?
  • 30. 
    What is the third phase of the cell cycle?