Biology 1401 Chapter 12 Patterns Of Inheritance

35 Questions | Total Attempts: 915

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Biology 1401 Chapter 12 Patterns Of Inheritance - Quiz

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Questions and Answers
  • 1. 
    A diploid organism that has two identical alleles for the same trait is called _______ for that particular trait.
    • A. 

      Homozygous

    • B. 

      Heterozygous

    • C. 

      Dominant

    • D. 

      Recessive

    • E. 

      Codominant

  • 2. 
    A gene for a particular trait that is only expressed in the presence of another gene of the same kind is called a(n)
    • A. 

      Dominant gene.

    • B. 

      Codominant gene.

    • C. 

      Incompletely dominant gene.

    • D. 

      Recessive gene.

    • E. 

      Multiple allele.

  • 3. 
    Mendel chose the garden pea for his work on inheritance for all of the following reasons except
    • A. 

      Earlier investigators had shown segregation among the offspring.

    • B. 

      A large number of true breeding varieties were already available.

    • C. 

      The generation time was short; many offspring can be grown easily.

    • D. 

      He could choose to self- or cross-pollinate.

  • 4. 
    Mendel's experiments had all of the following characteristics except
    • A. 

      Pea plants were self-pollinated for several generations.

    • B. 

      He always used only two plants for his work.

    • C. 

      Hybrid plants with alternative forms of traits were produced.

    • D. 

      Hybrid plants were self-pollinated for several generations.

  • 5. 
    Mendel referred to the trait that was expressed in the hybrid, F1 or first filial generation as
    • A. 

      Recessive.

    • B. 

      Dominant.

    • C. 

      Codominant.

    • D. 

      Independent.

    • E. 

      Epistatic.

  • 6. 
    In a typical Mendel experiment on pea-seed color, if the dominant yellow seed-bearing plant was crossed with the recessive green seed-bearing plant, the F2 generation will show what ratio of each kind?
    • A. 

      1 yellow: 3 green

    • B. 

      1 yellow: 1 green

    • C. 

      3 yellow: 1 green

    • D. 

      Seeds with patches of green and yellow color

    • E. 

      Tall plants with yellow seeds and short plants with green seeds

  • 7. 
    Mendel's understanding of the inheritance of traits in peas, expressed in modern language, included all of the following except
    • A. 

      Parents transmit information encoded in genes.

    • B. 

      Each individual contains two genes for each trait.

    • C. 

      Not all genes are identical; alternative forms (alleles) exist.

    • D. 

      Each of the alleles present in an individual is discrete.

    • E. 

      If a given allele is present, its effects will be seen in the individual.

  • 8. 
    When the two haploid gametes contain two different alleles of a given gene, the resulting offspring is called
    • A. 

      Discrete.

    • B. 

      A haploid.

    • C. 

      Heterozygous.

    • D. 

      Homozygous.

    • E. 

      A fused allele.

  • 9. 
    In a heterozygous individual the allele being expressed is
    • A. 

      Recessive.

    • B. 

      Masked.

    • C. 

      Redundant.

    • D. 

      Dominant.

    • E. 

      Epistatic.

  • 10. 
    An allele that is present but unexpressed is
    • A. 

      Redundant.

    • B. 

      Dominant.

    • C. 

      Functional.

    • D. 

      Epistatic.

    • E. 

      Recessive.

  • 11. 
    The allelic make up of an individual is referred to as its
    • A. 

      Blueprint.

    • B. 

      Genotype.

    • C. 

      Phenotype.

    • D. 

      Genetic pattern.

  • 12. 
    The observable outward manifestation of the genes of an individual is referred to as its
    • A. 

      Blueprint.

    • B. 

      Genotype.

    • C. 

      Phenotype.

    • D. 

      Genetic map.

  • 13. 
    What is the name of the cross that involves the mating of a hybrid F1 plant with a homozygous recessive plant for the same trait?
    • A. 

      Monohybrid cross

    • B. 

      Dihybrid cross

    • C. 

      Reciprocal cross

    • D. 

      Test cross

    • E. 

      Back cross

  • 14. 
    Yellow-seeded plants might be homozygous or heterozygous. We could find out which by crossing these plants with
    • A. 

      True breeding yellow-seeded plants.

    • B. 

      True breeding green-seeded plants.

    • C. 

      Heterozygous yellow-seeded plants.

    • D. 

      True breeding white-flowered plants.

    • E. 

      True breeding purple-flowered plants.

  • 15. 
    Mendel's first law encompasses all of the following except
    • A. 

      Alternative forms of trait are encoded by alternative alleles.

    • B. 

      Alternative alleles segregate in gametes.

    • C. 

      Either allele has equal probability to be passed on into the gamete.

    • D. 

      All genes found in an individual are not separable into gametes.

  • 16. 
    An individual possessing both kinds of alleles of two different traits is called
    • A. 

      Homozygote.

    • B. 

      Monohybrid.

    • C. 

      Dihybrid.

    • D. 

      True breed.

    • E. 

      Diallelic.

  • 17. 
    Let P = purple flowers and p = white, and T = tall plants and t = dwarf. What would be the appearance of a plant with the genotype PpTt?
    • A. 

      Purple flowers, tall

    • B. 

      Purple flowers, dwarf

    • C. 

      White flowers, tall

    • D. 

      White flowers, dwarf

    • E. 

      Pale purple flowers, intermediate height

  • 18. 
    Let P = purple flowers and p = white, and T = tall plants and t = dwarf. What combinations of gametes could be produced by a heterozygote for both the traits?
    • A. 

      PpTt only

    • B. 

      Pp, Tt

    • C. 

      P, p, T, t

    • D. 

      PT, Pt, pT, pt

    • E. 

      Infertile, no gametes produced

  • 19. 
    Let P = purple flowers and p = white, and T = tall plants and t = dwarf. Of the 16 possible gamete combinations in the dihybrid cross, how many would be the phenotype white, tall?
    • A. 

      None

    • B. 

      1

    • C. 

      3

    • D. 

      9

    • E. 

      16

  • 20. 
    Mendel's observations that different pairs of genes assort independently of each other is known as Mendel's
    • A. 

      First Law of Heredity.

    • B. 

      Pea Manifesto.

    • C. 

      Statement of Assortment Principle.

    • D. 

      Second Law of Heredity.

    • E. 

      Theory of Genetic Independence.

  • 21. 
    One of the main reasons genes assort independent of one another is that
    • A. 

      They produce unrelated traits.

    • B. 

      They produce related traits.

    • C. 

      They are on the same chromosome.

    • D. 

      They are different alleles.

    • E. 

      They are on different chromosomes.

  • 22. 
    A single gene has 3 or more alternative forms. These are called
    • A. 

      Heterozygotes.

    • B. 

      Multiple alleles.

    • C. 

      Epistatic.

    • D. 

      Homozygotes.

    • E. 

      Multiple zygotes.

  • 23. 
    Sometimes one gene pair will interact so as to control the expression of a second gene pair in an interaction called
    • A. 

      Dominance.

    • B. 

      Gene regulation.

    • C. 

      Recessiveness.

    • D. 

      Pleiotropy.

    • E. 

      Epistasis.

  • 24. 
    If an individual allele has more than one effect on the phenotype it is said to be
    • A. 

      Pleiotropic.

    • B. 

      Epistatic.

    • C. 

      Recessive.

    • D. 

      Dominant.

    • E. 

      Homozygotic.

  • 25. 
    ABO blood group expression is an example of
    • A. 

      Epistasis.

    • B. 

      Dominance.

    • C. 

      Recessiveness.

    • D. 

      Multiple alleles.

    • E. 

      Pleiotropy.

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