Genetic diseases are defined as diseases inherited by parents such as: diabetes, cancer, neurological and psychiatric diseases. And genetic diseases are born with the fetus and is estimated to die or to live his entire life injured, and parents may not be infected with these diseases, but there is a history of disease in the family makes the likelihood of injury is large, and increases the likelihood if one of the parents infected.
Genetic Diseases
Genetic diseases can be divided into three types, according to genetic and biologists:
Diseases called genes-related diseases
These genes are related to genes. In genes, the chromosome is formed. This chromosome consists of adhering to a group of genes. Each gene controls each of the human traits. Genetic diseases result in a defect in the genes themselves. To be infected or diseased.
Types of genetic diseases
- Genetic diseases, called the disease, are transmitted by generations: from mother to child, from father to child. To know these diseases, there are certain indications:
- The person carrying the disease is a parent, and the symptoms of the disease are not apparent.
- Both males and females have the same disease.
- The patient in the laboratory tests carries only one gene for the disease.
- Genetic diseases called (recessive), and also have indications of knowledge, namely:
- In this case, patients will have the disease gene.
- Both sexes are infected equally by male and female, and this disease prevails in the marriage of relatives.
- Parents are normal with their pregnancy.
In every pregnancy carried by the mother, which is the carrier of this type of disease, the odds are: 50% of the newborns carry the disease and do not show symptoms, and 25% of the newborns are born natural and not infected with any of these diseases, and 25% of the newborns are born with the disease and show symptoms .
Diseases that are called chromosomal diseases (chromosomal diseases)
Which are the change in which the number of chromosomes of the lack or increase in the pairs of chromosomes, these changes are divided into two types:
- Changes in the number, as in Down syndrome, and in this type the change in the number of chromosomes is a deficiency or an increase.
- Changes in the shape or structure of chromosomes.
Diseases that are called diseases that suffer more than the cause of any (vehicle)
These diseases are for many reasons, such as: genetics, or because of the surrounding environment, and the main cause of their occurrence, such as genetic heart hole, is not known.