What you need to know about Hereditary Diseases
A hereditary disease is any condition caused by abnormality in a person’s genetic makeup/ genome. It can range from major to minor abnormality- from a gross abnormality involving subtraction/ addition of a whole chromosome/ set of chromosomes to a distinct mutation in one base of a particular gene’s DNA.
Some hereditary diseases are passed on from parents, whereas others result from acquired mutations/ changes in preexisting group of genes or one preexisting gene.
In most cases, mutations are caused by environmental exposure. In other cases, however, they occur randomly.