Which tissue is most likely to provide an adequate DNA sample for genetic testin
ID: 241525 • Letter: W
Question
Which tissue is most likely to provide an adequate DNA sample for genetic testing? Select one: 0 a. Mature red blood cells O b. Nasal epithelial cells O c. Distal ends of hair shafts O d. Amummy's tooth A 40 year-old man who has a mother who was diagnosed with breast cancer at age 45, a father who was diagnosed with smoking-related lung cancer at age 55, a 33-year-old sister with breast cancer, and a 38-year-old sister with ovarian cancer, asks if he should be concerned for his cancer risk. What is the best response? Select one: a. "Your risk is not affected by this family history because most of the cancers arose in female sex-associated tissues." b. You have two first-degree relatives and two second-degree relatives with cancer, which increases your general risk for O cancer c-"Your risk for breast cancer may be increased and requires more investigation; however, your risk for lung cancer is not affected by this history" d. "Your risk for cancer is affected by your parents cancer development and you should have genetic c basis, however, your sisters cancers have no bearing on your risk Which lethal cardiac arrhythmia can occur as a complication of long QT syndrome? ered Select oneExplanation / Answer
1) The correct answer is option B that is nasal epithelial cells because it has adequate amount of DNA than any other options given.
Red blood cells do not have nucleus so that is incorrect.
Hair shaft is not a source of DNA aa most of the DNA is lost because of to cornification.
Tooth can be used as genetic testing but the epithelial cells have greater amount of DNA than tooth.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.