DNA, RNA, And Genetics! Trivia Questions Quiz

28 Questions | Total Attempts: 337

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DNA, RNA, And Genetics! Trivia Questions Quiz

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Questions and Answers
  • 1. 
    Twin colts were born from a black mare and a black stallion. One colt was black, and one was brown. The colts have different traits because their DNA contains
    • A. 

      Different amounts of sugars in their molecules

    • B. 

      Different arrangements of nucleotides

    • C. 

      Different amounts of the base thymine

    • D. 

      Different numbers of proteins in their molecules

  • 2. 
    In guinea pigs, the allele for a rough coat (R) is dominant over the allele for a smooth coat (r). A heterozygous guinea pig and a homozygous recessive guinea pig is mated. Which of the following would be the phenotypes of the offspring?
    • A. 

      All rough coat

    • B. 

      All smooth coat

    • C. 

      2 rough coat and 2 smooth coat

    • D. 

      3 rough coat and 1 smooth coat

  • 3. 
    Which choice represents a dihybrid cross?
    • A. 

      Sb x sB

    • B. 

      RRYy x RrYY

    • C. 

      X hX h x XHX h

    • D. 

      XY x XX

  • 4. 
    A particular variety of corn can produce yellow or white seeds. Yellow is dominant. White is recessive. If a particular ear of corn contains ONLY white corn, it must be —  
    • A. 

      Homozygous for white color

    • B. 

      Heterozygous for white color

    • C. 

      Heterozygous for yellow color

    • D. 

      Homozygous for yellow color

  • 5. 
    The Punnett square above shows a cross between a homozygous dominant genotype for haircolor and a heterozygous genotype for hair color. Which conclusion can be drawn from thePunnet square above?
    • A. 

      The parents will have four offspring.

    • B. 

      Two of the offspring will be homozygous recessive.

    • C. 

      Only two of the offspring will have the same hair color.

    • D. 

      All of the offspring will have the same hair color.

  • 6. 
    In a particular population of bees, longwings are dominant over short wings.Which of the following must be TRUE aboutthe genetic material that produced a beewith long wings?
    • A. 

      Heterozygous for long wings OR homozygous for short wings

    • B. 

      Homozygous for short wings OR heterozygous for long wings

    • C. 

      Homozygous for short wings OR homozygous for long wings

    • D. 

      Heterozygous for long wings OR homozygous for long wings

  • 7. 
    Having freckles is a dominant trait inhumans. Kimberly has freckles, but herbrother, Hugo, does not. What must herparents’ genotypes be for this to bepossible?
    • A. 

      FF and FF

    • B. 

      Ff and ff

    • C. 

      Ff and Ff

    • D. 

      FF and ff

  • 8. 
    Edwards Syndrome is a serious condition causing 10% of those born with it to die within their first year. The cause is trisomy 18, the presence of three chromosome 18s. All children with this condition are mentally retarded and suffer with breathing problems and possible seizures. The technique for diagnosing Edwards Syndrome involves a series of steps: obtaining cells from the individual, staining chromosomes from the cells; identifying chromosomes by their size and staining patterns, and rearranging, grouping, and sequencing the autosomes in order of decreasing length. This method of diagnosis is a form of —
    • A. 

      Genetic modification

    • B. 

      Karyotyping

    • C. 

      DNA fingerprinting

    • D. 

      Genetic transformation

  • 9. 
    In cattle, the allele for short horns (S) isdominant over the allele for long horns(s). Two short­horn cows are bred andproduce four offspring. Three have shorthorns and one has long horns.Which of the following is the MOST likelycombination of genotypes in theseoffspring?
    • A. 

      3 SS and 1 ss

    • B. 

      1 SS, 2 Ss, and 1 ss

    • C. 

      1 SS, 2 ss, and 1 Ss

    • D. 

      2 SS and 2 ss

  • 10. 
    What determines the traits of an organism?
    • A. 

      Relation of AT to CG base pairs

    • B. 

      Number of nitrogen bases in RNA

    • C. 

      Presence of  ribose or deoxyribose in a nucleic acid

    • D. 

      Sequence of nitrogen bases in DNA

  • 11. 
    The DNA regions that code for proteinsare —
    • A. 

      Introns

    • B. 

      Exons

    • C. 

      Promoters

    • D. 

      Polymerase

  • 12. 
    Compared with mitosis, the process ofmeiosis results in —
    • A. 

      Greater number of cell chromosomes per cell

    • B. 

      Greater volume of cell cytoplasm per cell

    • C. 

      Greater number of daughter cells

    • D. 

      Greater amount of genetic material per cell

  • 13. 
    In cellular reproduction, which of thefollowing processes occurs thesame number of times in meiosis as itdoes in mitosis?
    • A. 

      The cytoplasm is divided evenly between the cells.

    • B. 

      The DNA in the chromosomes is duplicated.

    • C. 

      The cells divide into equally sized halves.

    • D. 

      The chromosomes align themselves at opposite ends of the cells.

  • 14. 
    Meiosis plays a more significant role inreproduction than mitosis in which of thefollowing?
    • A. 

      Increasing the variability of genetic information

    • B. 

      More efficiently using energy in the cell division process

    • C. 

      More rapidly reproducing and growing

    • D. 

      Increasing the process of asexual reproduction

  • 15. 
    When one or more nucleotides are lostduring chromosomal crossover in meiosis,this is called —
    • A. 

      Deletion mutation

    • B. 

      Insertion mutation

    • C. 

      Translocation mutation

    • D. 

      Inversion mutation

  • 16. 
    This diagram illustrates ______ which occurs during _____.
    • A. 

      Reverse transcription, protein synthesis

    • B. 

      Point mutation, DNA replication

    • C. 

      Crossing over, meiosis

    • D. 

      DNA replication, cell cycle

  • 17. 
    Refer to the diagram. What processoccurs at Y?
    • A. 

      Mitosis I

    • B. 

      Mitosis II

    • C. 

      Meiosis 1

    • D. 

      Meiosis II

  • 18. 
    How many daughter cells result from aparent cell in meiosis?
    • A. 

      2

    • B. 

      4

    • C. 

      6

    • D. 

      8

  • 19. 
    Which of the following BEST describesmeiosis?
    • A. 

      Cell division that occurs only in the reproductive structures of an organism

    • B. 

      process prior to the first stage of cell division

    • C. 

      Occurs in all cells of the body system

    • D. 

      Cell division that occurs in the repair process of damaged skin cells

  • 20. 
    How does a stem cell become a nervecell, bone cell, or muscle cell?
    • A. 

      By expressing certain combinations of genes

    • B. 

      By repressing certain combinations of genes

    • C. 

      By expressing certain combinations of genes and repressing others

    • D. 

      By expressing all genes

  • 21. 
    What technique is BEST for matchingevidence left at a crime scene with asuspect’s nasal swab?
    • A. 

      Gel electrophoresis

    • B. 

      Karyotyping

    • C. 

      Blood typing

    • D. 

      Electron chain reaction

  • 22. 
    Which of the following represents thegenotype of offspring Ttrr? 
    • A. 

      Heterozygous tall, homozygous wrinkled

    • B. 

      Heterozygous short, homozygous wrinkled

    • C. 

      Heterozygous short, homozygous round

    • D. 

      Homozygous tall, homozygous wrinkled

  • 23. 
    What is the appearance of offspring X?
    • A. 

      Tall, round

    • B. 

      Short, wrinkled

    • C. 

      Short, round

    • D. 

      Tall, wrinkled

  • 24. 
    What is the correct genetic combinationof offspring X?
    • A. 

      Tr

    • B. 

      Tr x Tr

    • C. 

      TTrr

    • D. 

      TtRr

  • 25. 
    What, if anything,  is wrong with the patient below?
    • A. 

      Normal: nothing is wrong with the patient

    • B. 

      Abnormal; missing a sex chromosome; has Turner's syndrome

    • C. 

      Abnormal; has an extra sex chromosome; has Klienfelter's syndrome

    • D. 

      Abnormal; has an extra chromosome at 21 resulting in Down's syndrome

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