Genetics Multiple Choice Questions and Answers

31. What are the repeating units of nucleic acids?

1. phosphate molecules
2. nucleotides
3. bases
4. sugar molecules

32. ______ is a genetic changes that occur in more than 1 percent of the population

1. Polymorphisms
2. Monotheism
3. Frameshift mutation

33. Which of the following is not needed for DNA transcription?

1. Ribosomes
2. Nucleotides
3. DNA
4. Enzymes

34. A pedigree chart shows:

1. The genotypic ratios of the offspring.
2. The types of gametes produced by the parents.
3. The pattern of inheritance of a specific gene.
4. Which genes are co-dominant.

35. BRCA-1 is associated with which cancer?

1. Thyroid
2. Leukemia
3. Lung
4. None of the above

36. A heritable feature is a ______ and may have two or more variants called

1. trait/characteristics
2. character/traits
3. character/factors
4. trait/factors

37. Proteins that assist the binding of RNA polymerase to the promoter region on DNA strand are called

1. Transcription factor
2. SSB protein
3. Sigma factor
4. All of the above

38. Cancer cells are

1. Unlimited number of cell divisions
2. Growth without external signals
3. Avoidance of cell death
4. All of the above