What are hereditary diseases?
It is a disease or disorder that is inherited genetically. Hereditary Diseases are passed on from one generation to another through defective genes. These diseases are transmitted in the same family. The chromosomes in the humans are responsible for passing the traits from the parent to the offspring.
What is hereditary disease give example for it?
Sickle cell disease affects the shape of red blood cells and their ability to carry oxygen. Normally, red blood cells are round, but in people with this hereditary disease they have a crescent-shaped appearance, causing the red blood cells to stick together, which can lead to a blockage of the small blood vessels.
What is the difference between genetic and hereditary?
The main difference between these two terms lies in the fact that hereditary diseases have the potential of being carried from one generation to another whereas a genetic disease can either be hereditary or not, but there will always be a mutational change in the genome.
Are genes hereditary?
A gene is the basic physical and functional unit of heredity. Genes are made up of DNA. Some genes act as instructions to make molecules called proteins. However, many genes do not code for proteins.
What do you mean by heredity?
heredity, the sum of all biological processes by which particular characteristics are transmitted from parents to their offspring. The set of genes that an offspring inherits from both parents, a combination of the genetic material of each, is called the organism’s genotype.
What are the two types of genetic disease?
There are three types of genetic disorders:
- Single-gene disorders, where a mutation affects one gene. Sickle cell anemia is an example.
- Chromosomal disorders, where chromosomes (or parts of chromosomes) are missing or changed.
- Complex disorders, where there are mutations in two or more genes.
Is pneumonia a hereditary disease?
Genetic factors can increase the risk of respiratory infections, including acute bronchitis and pneumonia. Most often, genetic polymorphisms underlie vulnerability to recurrent infections, but in rare cases monogenic defects are responsible (table 1).