Rebecca’s family tree, as illustrated in the pedigree above, shows a high incidence of cancer among close relatives. But are genes the cause of cancer in this family? Only genetic testing, which is th...Rebecca’s family tree, as illustrated in the pedigree above, shows a high incidence of cancer among close relatives. But are genes the cause of cancer in this family? Only genetic testing, which is the sequencing of specific genes in an individual, can reveal whether a cancer-causing gene is being inherited in this family.
