Biology Domain 2 Mechanisms Of Genetics

10 Questions | Total Attempts: 50

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Biology Domain 2 Mechanisms Of Genetics

This STAAR EOC Prep quiz will demonstrate mastery of the mechanisms of genetics.


Questions and Answers
  • 1. 
    Which of the following component of DNA is described properly?
    • A. 

      A nitrogen base creates the backbone of the double helix

    • B. 

      Uracil gives the mRNA its energy

    • C. 

      A 5 carbon sugar is the central component of the nucleotide

    • D. 

      Phosphate group which gives the DNA its positive charge

  • 2. 
    The components that make up the genetic code are common to
    • A. 

      Archaea

    • B. 

      Eukaryota

    • C. 

      Prokaryota

    • D. 

      All of the above

  • 3. 
    The image shown represents which stage of protein synthesis?
    • A. 

      Replication of DNA

    • B. 

      Translation of mRNA

    • C. 

      Replication of tRNA

    • D. 

      Transcription of mRNA

  • 4. 
    When a DNA molecule replicates, hydrogen bonds between base pairs break to unzip the molecule.  The breaking of hydrogen bonds is an example of
    • A. 

      A change of state

    • B. 

      A physical change

    • C. 

      A nuclear change

    • D. 

      A chemical change

  • 5. 
    Gene expression 
    • A. 

      Is a regulated process

    • B. 

      Most often produces lipids

    • C. 

      Involves sixteen steps

    • D. 

      Has nothing to do with traits

  • 6. 
      What should the caption for this set of images be?
    • A. 

      Cancers

    • B. 

      Translocations

    • C. 

      Polyploidy

    • D. 

      Frameshift mutations

  • 7. 
    Jamie has free earlobes, which are a recessive trait in humans.  Her parents both have attached earlobes.  What conclusion can be drawn from this information?
    • A. 

      Jamie's parents are both homozygous for the dominant trait.

    • B. 

      Jamie's parents are both homozygous for the recessive trait.

    • C. 

      Jamie's parents are both heterozygous.

    • D. 

      Jamie's grandparents all have free earlobes.

  • 8. 
      The outcomes of the Punnett square shown would be BEST described as:
    • A. 

      75% Round, 25% Wrinkled, 75% Yellow, 25% Green Phenotypes

    • B. 

      50% homozygous dominant, 25% heterozygous recessive Genotypes

    • C. 

      12:16:12:16

    • D. 

      RRYY X rrYy X Rryy X rRYY X rryy

  • 9. 
    The specialized cells that result from meiosis
    • A. 

      Are not gametes but are the result of asexual reproduction

    • B. 

      Have one-half of the number of chromosomes as other body cells

    • C. 

      Contain genetic information that determine the traits of the two organisms that produced them.

    • D. 

      Cannot be modified by current human technology

  • 10. 
     What should the caption for this picture be?
    • A. 

      Meiosis charting

    • B. 

      Rainbow grapevine genetic pairing

    • C. 

      DNA fingerprinting

    • D. 

      Spectral chromosomal analysis of the human genome