Question
What are major genetic diseases? If my grandparent has this disease, what is the likelihood of me having it?
Answer
Genetic diseases are caused by abnormal changes in genetic material (including chromosomes and genes). To date, there are approximately 3,000 known genetic diseases in the world, including over 300 chromosomal diseases and over 2,700 gene diseases. Common genetic diseases include dominant and recessive chromosomal diseases, X-linked genetic diseases, polygenic genetic diseases, and chromosomal disorders.