The ABO system consists of A, B, AB, and O blood types. People with type A have antibodies in the blood against type B. People with type B have antibodies in the blood against type A. People with AB have no anti-A or anti-B antibodies.
Developmental dyslexia, or specific reading disability, is a disorder in which children with normal intelligence and sensory abilities show learning deficits for reading.
Dyslexia is a unique learning disability that is not connected to intelligence. It is a very common condition that is still a bit of a mystery to most. As more is understood about dyslexia, it is easier to understand the causes and symptoms of this condition.Dyslexia is categorized as hereditary and it is found that parents with dyslexia have about a 40% chance of having a child with the same condition.lthough dyslexia is hereditary, it is also found that this condition is more prominent in boys than in girls. Boys are about 3 times more likely to be diagnosed with this condition. The cause for this is still unknown.