NUR 239 Exam 4 Questions with Complete Solutions

When explaining genetic coding to a group of students, the instructor discusses gene activation and deactivation. It was stressed that inactivation of a gene requires which of the following processes? Correct Answer-Methylation of histone amino acid When an infant is born with gene mutations in his cells, the nurse explains to the parents that accidental errors may be a result of: Select all that apply. Correct Answer-Loss of one or more base pairs Substitution of one base pair for another Rearrangement of the base pairs Which of the following statements is true of genetic mutations? Correct Answer-Mutations may result from environmental agents. While explaining the individual differences in physical traits in the family group, the health care provider states this is usually a result of: Correct Answer-Small DNA sequence variation Which genetic disorders (body system) have a high requirement for oxidative metabolism associated with mitochondrial DNA? Correct Answer-Neuromuscular disorders Which of the following statements is true of messenger RNA (mRNA)? Correct Answer-mRNA provide