Genetics Trivia Quiz

28 Questions | Total Attempts: 61

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Genetics Quizzes & Trivia

Genetics affect a lot of attributes for a person, such as behavior, shape, and even appearance. Genes are the basic units of heredity. Genes carry information that determines what characteristics are inherited from an organism's parents. Three types of genetic disorders can affect someone based on their history. Take up the genetics trivia blow and see just how much you remember about our class.


Questions and Answers
  • 1. 
    DNA replication on the leading strand
    • A. 

      Apparently proceeds ‘3  5’

    • B. 

      Is continuous

    • C. 

      Is discontinuous

    • D. 

      Involves numerous Okazaki fragments

    • E. 

      Involves numerous RNA primers

  • 2. 
    Diploid plant Species A has 2n=14 chromosomes. Allotetraploid Species B has 2n=28 chromosomes. A plant breeder hybridizes the two species and uses colchicine to double up the chromosomes to produce a fertile allohexaploid. The allohexaploid will have ____ chromosomes per cell.
    • A. 

      14

    • B. 

      21

    • C. 

      28

    • D. 

      42

    • E. 

      56

  • 3. 
    In a DNA denaturation-renaturation experiment the first sequences to reanneal are
    • A. 

      Highly repetitive DNA

    • B. 

      Histones

    • C. 

      Moderately repetitive DNA

    • D. 

      Nonhistones

    • E. 

      Single-copy DNA

  • 4. 
    The complementary strands of the DNA double helix are bound together by
    • A. 

      Covalent bonds

    • B. 

      Hydrogen bonds

    • C. 

      Ionic bonds

    • D. 

      Metallic bonds

    • E. 

      Van der Waals forces

  • 5. 
    An individual autotetraploid plant can carry up to ____ alleles at a locus.
    • A. 

      2

    • B. 

      3

    • C. 

      4

    • D. 

      5

    • E. 

      6

  • 6. 
    In RNA, the base Uracil replaces
    • A. 

      Adenine

    • B. 

      Cytosine

    • C. 

      Guanine

    • D. 

      Pyrimidine

    • E. 

      Thymine

  • 7. 
    The chromosome number for a human being with Primary Down Syndrome is
    • A. 

      2n=23

    • B. 

      2n=24

    • C. 

      2n=45

    • D. 

      2n=46

    • E. 

      2n=47

  • 8. 
    The nature of replication was demonstrated in an elegant experiment by
    • A. 

      Beadle and Tatum

    • B. 

      Hersey and Chase

    • C. 

      Meselson and Stahl

    • D. 

      Srb and Horowitz

    • E. 

      Watson and Crick

  • 9. 
    In eukaryotes, a DNA sequence that stimulates of maximal transcription of a gene (and may be upstream, downstream, at a distance in either direction, or even within an intron of the gene itself) is called a/an
    • A. 

      Enhancer

    • B. 

      Operator

    • C. 

      Operon

    • D. 

      Precursor

    • E. 

      Promoter

  • 10. 
    RNA synthesis proceeds
    • A. 

      ‘3  5’ antiparallel to the DNA template strand

    • B. 

      ‘3  5’ parallel to the DNA template strand

    • C. 

      ‘5  3’ antiparallel to the DNA template strand

    • D. 

      ‘5  3’ parallel to the DNA template strand

    • E. 

      Via none of the above

  • 11. 
    Aneuploidy can result from nondisjunction of chromosomes at
    • A. 

      Mitosis

    • B. 

      Meiosis I

    • C. 

      Meiosis II

    • D. 

      All of the above

    • E. 

      None of the above

  • 12. 
    The nature of DNA replication is
    • A. 

      Conservative

    • B. 

      Diffractive

    • C. 

      Dispersive

    • D. 

      Liberal

    • E. 

      Semi-conservative

  • 13. 
    The DNA bases adenine and guanine are
    • A. 

      A purine and a pyrimidine, respectively

    • B. 

      A pyrimidine and a purine, respectively

    • C. 

      Both purines

    • D. 

      Both pyrimidines

    • E. 

      None of the above

  • 14. 
    The protein-coding regions in a typical eukaryotic gene are referred to as
    • A. 

      Exons

    • B. 

      Introns

    • C. 

      Operons

    • D. 

      Replicons

    • E. 

      Transposons

  • 15. 
    Allopolyploidization typically begins with
    • A. 

      Asexual reproduction

    • B. 

      Colchicine treatment

    • C. 

      Interspecific hybridization

    • D. 

      Mosaic formation

    • E. 

      Unbalanced gametes

  • 16. 
    DNA synthesis proceeds
    • A. 

      ‘3  5’ antiparallel to the template strand

    • B. 

      ‘3  5’ parallel to the template strand

    • C. 

      ‘5  3’ antiparallel to the template strand

    • D. 

      ‘5  3’ parallel to the template strand

    • E. 

      Via none of the above

  • 17. 
    In DNA, information resides in the
    • A. 

      Amino acid sequence

    • B. 

      Base sequence

    • C. 

      Chromatosome structure

    • D. 

      Nucleosome structure

    • E. 

      Sugar-phosphate backbone

  • 18. 
    In the DNA double helix, the following pair of complementary bases shares three hydrogens:
    • A. 

      A and C

    • B. 

      A and G

    • C. 

      A and T

    • D. 

      G and C

    • E. 

      G and T

  • 19. 
    The number of genetic loci in the haploid genome of a prokaryote like E. coli is approximately
    • A. 

      4

    • B. 

      40

    • C. 

      400

    • D. 

      4000

    • E. 

      40000

  • 20. 
    Eukaryotic chromosomes replicate
    • A. 

      From a single origin of replication

    • B. 

      From numerous origins of replication

    • C. 

      Via reverse transcription

    • D. 

      Via rolling circle replication

    • E. 

      Via theta replication

  • 21. 
    In the eukaryote, a core of eight histone proteins together with the 145-147bp of DNA that wraps around the core is a
    • A. 

      Centromere

    • B. 

      Nucleosome

    • C. 

      Regulatory element

    • D. 

      Telomere

    • E. 

      Transposable element

  • 22. 
    A promoter is a sequence where DNA replication is initiated.
    • A. 

      True

    • B. 

      False

  • 23. 
    Initiation of transcription does not require a primer
    • A. 

      True

    • B. 

      False

  • 24. 
    Transcription and translation take place simultaneously in bacterial cells.
    • A. 

      True

    • B. 

      False

  • 25. 
    (6 points) List three important characteristics necessary for genetic material.
    • A. 

      Genetic material must contain complex information Genetic material must replicate with accuracy & precision [but change too] Genetic material must encode phenotype

  • 26. 
    (6 points) List the three major forms of RNA.
    • A. 

      MRNA, tRNA, rRNA

  • 27. 
    (6 points) List three essential elements of an artificial chromosome.
    • A. 

      A centromere two telomeres and an origin of replication

  • 28. 
    (6 points) List three reasons why DNA replication is remarkably accurate and precise.
    • A. 

      Watson-Crick base pairing Mismatch repair (other DNA polys) DNA proofreading (DNA poly I)