Multiple choice quiz

Quizzes are available to test your understanding of the key concepts covered in each chapter. Click on the arrows next to each question to view the answer.

1. If you are _______ for a particular gene, it means that you carry both a dominant and recessive allele of that gene.

  1. Homozygous
  2. Heterozygous
  3. Dizygotic
  4. Homogenized
  5. Multipotent 


b. Heterozygous

2.  _______twins share all of their genes, whereas _______ twins share only half their genes.

  1. Monogamous; polygamous
  2. Eccentric; conventional
  3. Monozygotic; dizygotic
  4. Homogenous; heterogeneous
  5. Homozygous; heterozygous


c. Monozygotic; dizygotic

3. The combination of the variance contributed by our genes (Gv) plus our environment (Ev) plus the variance attributable to the gene x environment interaction Pv = Gv + Ev + (Pv x Ev) refers to:

  1. Interactive variance
  2. Additive variance
  3. Polymorphic variance
  4. Epigenetic variance
  5. Phenotypic variance


e. Phenotypic variance

4. Which of the following is not a nucleotide?

  1. Guanine
  2. Tyrosine
  3. Adenine
  4. Thymine
  5. Cytosine


b. Tyrosine

5. Which type of RNA is responsible for the translation of genetic information?

  1. Antisense RNA
  2. Ribosomal RNA
  3. Transfer RNA
  4. Messenger RNA
  5. MicroRNA


c. Transfer RNA

6. _______ refers to the extent to which a particular characteristic or trait in the population is attributable to genetic differences.

  1. Heritability
  2. Genetic diversity
  3. Genetic drift
  4. Genetic variance
  5. Genetic stability 


a. Heritability

7. Changes in a gene sequence that occurs in a significant portion of the population (more than 1%) are referred to as:

  1. Translocations
  2. Deletions
  3. Amplifications
  4. Mutations
  5. Polymorphisms


e. Polymorphisms

8. Epigenetics refers to changes in:

  1. Gene expression
  2. DNA sequence
  3. Gene structure
  4. DNA frequency
  5. All of the above


a. Gene expression

9. If epigenetic changes occur within _______ cells, they can be transmitted from one generation to the next.

  1. Mitochondrial
  2. Stem
  3. Neuronal
  4. Germ line
  5. Tumor


d. Germ line

10. A neuron is not comprised of which of the following structures:

  1. Axon
  2. Dendrites
  3. Cell body
  4. Receptors
  5. Glia


e. Glia