Dr. Su points out that BRCA1 and BRCA2 are autosomal dominant genes, which means that offspring of individuals with one of these gene mutations have a 50 % chance of inheriting the gene mutation. Even without a family history of the gene, one person in 200-300 is a carrier of the gene.
蘇怡寧指出，這兩個基因屬於顯性遺傳，遺傳的機率是一半，就算沒有家族病史，也有約兩百分之一到三百分之一的人帶有這類基因。