PATHOLOGY

Detailed explanation-1: -If you have only one recessive gene, you are a “carrier” for the trait or disease, but you do not have any health problems from “carrying” one copy of the gene. Most people don’t know they carry a recessive gene for a disease until they have a child with the disease, or they have another family member with the disease.

Detailed explanation-2: -You also can inherit diseases, or a greater likelihood of getting a disease, from either parent. How much of an influence either parent’s genes have depends on the disease.

Detailed explanation-3: -Each variation of a gene is called an allele (pronounced ‘AL-eel’). These two copies of the gene contained in your chromosomes influence the way your cells work. The two alleles in a gene pair are inherited, one from each parent.

Detailed explanation-4: -“Dominant” means that a single copy of the mutated gene (from one parent) is enough to cause the disorder. A child of a person affected by an autosomal dominant condition has a 50% chance of being affected by that condition via inheritance of a dominant allele.