A genetic disease derives its name from the fact that the diseases occur because of genome abnormalities in an individual. Genetic diseases may result from tiny abnormalities like single gene mutation or from large abnormalities of deformed or missing chromosomes.
Diseases
More than 20 human genetic diseases exist, including many commonly known and lesser-known diseases. Down's syndrome, color blindness and cystic fibrosis are a few examples of human genetic diseases.
Heredity
Genetic diseases pass through families like red hair and chin dimples. If the disease affects one or both parents, the disease can transfer because of dominate genes. If neither parent has the disease but past family members did or do, the disease transfers as a recessive gene.
Inheritance Types
In hereditary genetic diseases, there are four main types of genetic inheritance modes used to describe mutations and growth of genes and chromosomes: single gene inheritance, multifactorial inheritance, chromosome abnormalities and mitochondrial inheritance.
Spontaneity
Some genetic disorders develop as an embryonic mutation. In these cases, no family history of the disease appears.
Specifics
Some genetic diseases can be determined specifically; Down syndrome is recognizable by a missing chromosome. Other genetic diseases like diabetes and mental illnesses leave behind such complex inheritance patterns that genetic exactness is hard to understand.
Tags: Down syndrome, genetic diseases, genetic diseases, human genetic, human genetic diseases, single gene