As there is a history of hereditary disease in the families of Tim and Faith, they have arranged a meeting with a specialist at which a family tree concerning the odds of them having a child with a birth defect will be constructed. This event would most accurately be described as .

Genetic Counselling

Explanation:

The objective is for the Genetic Counselor to enlighten the family about the hereditary disease in the family, to give the chances of inheriting the diseases, the genetic status of partners they should have (if not married), and the likehood of kids that may  have , the detrimental effects of the disease on pregnancy( for those pregnant), the safety procedures to take to avert complications, and possible ways to  reduce the chances of the inheritance of the diseases or   to obliterate it from the family.Thus in summary to Counsel the family about the genetic disorder.

These are the role of  Genetic Counsellor, to enlighten, explain, inform., calm, predict and educate families ,couple of the chances of  inheriting a genetic disorder,or complication that may arise,or to placate tension that may arise from such inheritance,Expert in this field are Certified with master Master Degree.