While Managing the Care of Your 18-Year-Old Patient with a Thoracic

Multiple Choice

While managing the care of your 18-year-old patient with a thoracic aneurysm with dissection (TAAD) , your patient reveals to you that his grandfather suffered from the same condition but was not diagnosed until the age of 63 when he first developed symptoms. What is the phenomenon in which one individual in a family may present with symptoms at a young age, whereas another individual may present at an elderly age?

A) Pentrance
B) Genetic heterogeneity
C) Genocopy
D) Variable expressivity