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.
Homozygous
Heterozygous
Dizygotic
Homogenized
Multipotent
Answer:
b. Heterozygous
2. _______twins share all of their genes, whereas _______ twins share only half their genes.
Monogamous; polygamous
Eccentric; conventional
Monozygotic; dizygotic
Homogenous; heterogeneous
Homozygous; heterozygous
Answer:
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:
Interactive variance
Additive variance
Polymorphic variance
Epigenetic variance
Phenotypic variance
Answer:
e. Phenotypic variance
4. Which of the following is not a nucleotide?
Guanine
Tyrosine
Adenine
Thymine
Cytosine
Answer:
b. Tyrosine
5. Which type of RNA is responsible for the translation of genetic information?
Antisense RNA
Ribosomal RNA
Transfer RNA
Messenger RNA
MicroRNA
Answer:
c. Transfer RNA
6. _______ refers to the extent to which a particular characteristic or trait in the population is attributable to genetic differences.
Heritability
Genetic diversity
Genetic drift
Genetic variance
Genetic stability
Answer:
a. Heritability
7. Changes in a gene sequence that occurs in a significant portion of the population (more than 1%) are referred to as:
Translocations
Deletions
Amplifications
Mutations
Polymorphisms
Answer:
e. Polymorphisms
8. Epigenetics refers to changes in:
Gene expression
DNA sequence
Gene structure
DNA frequency
All of the above
Answer:
a. Gene expression
9. If epigenetic changes occur within _______ cells, they can be transmitted from one generation to the next.
Mitochondrial
Stem
Neuronal
Germ line
Tumor
Answer:
d. Germ line
10. A neuron is not comprised of which of the following structures:
