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Genetic diseases
Genetic diseases are diseases transmitted from one generation to another between parents and children, which means there is a certain defect in a gene inherited from parents to their children, some of which appears at birth, and delayed some of which appear to advanced age.
The causes of genetic disease
causes genetic diseases vary depending on the defect that causes them, it may be an imbalance in the number of chromosomes , such as Down syndrome, or genetic mutations cause damage to chromosomes , such as a Huntenkton disease, which results in damage to the cells Almkh.oukd be inheritable gene carrier for a particular disease both parents , such as thalassemia, an inherited disorder in which blood cells so that the body becomes unable to manufacture hemoglobin normally.
Types of genetic diseases
are genetic diseases are divided into two types:
genetic disease: This disease is caused by a defect in chromosome carries the qualities that, without a change in the composition and form, is of two types: genetic diseases prevalent and recessive genetic diseases.
Genetic diseases prevalent: carried by the child , either male or female through inheriting the characteristics of the mother, or father, but do not appear on the Son any symptoms of the disease, it bore described only, and there are more than six hundred species of these genes.
Genetic diseases recessive: The inheritance of these diseases as well, but here's got to be in both two copies of gene errors to the turmoil going on, which means that both parents must be downloaded at least one copy of the gene mutation Set up producing an infected child, and therefore Vaanmalah that the child inherited both changing versions at the same time by 25%, causing turmoil in the child.
Chromosomal diseases: In this disease there is a change on the chromosomes, which are of two types: structural changes and changes in numerical Changes Alheldah: In this type occurs defect in the form of a chromosome, such as lack of part of the fifth chromosome that leads to the disease crying cat which is crying baby looks like miaow, with many other distortions Ki_oh heart, and uterus in females. Numerical changes: occurs when there is an increase or decrease in the number of chromosomes, the normal wholesale entry of human chromosomes is twenty - three pairs, ie , forty - six chromosomes, the increased this number was a forty - seven, a child with Down syndrome hurt.
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