Addition (often signified by the plus symbol +) is one of the four elementary, mathematical operations of arithmetic, with the others being subtraction, multiplication and division. The addition of two whole numbers is the total amount of those quantities combined.hen addition is used together with other operations, the order of operations becomes important. In the standard order of operations, addition is a lower priority than exponentiation, nth roots, multiplication and division, but is given equal priority to subtraction.
Xeroderma pigmentosum is one of the inherited DNA repair disorders, which also include Cockayne syndrome, trichothiodystrophy, Bloom syndrome, RothmundâThomson syndrome, and Werner syndrome. It is inherited as an autosomal-recessive disorder and is characterized by a hypersensitivity of the skin to ultraviolet radiation, a deficiency in the repair of damaged DNA, and a resultant high incidence of skin cancers.
Inheritance of Autosomoal Dominant Genetic Diseases. These genetic diseases are diseases caused by an error in a single DNA gene. Autosomal means the errors occurs on chromosome 1..22 rather than on the 23rd sex-linked X chromosome. There are also X-linked dominant genetic diseases affecting the 23rd X chromosome.Some examples of autosomal dominant diseases are Huntington's disease and achondroplasia (dwarfism).n dominant genetic diseases, the bad gene overcomes the good gene and disease occurs, whereas in recessive diseases the good gene is an adequate backup and recessive diseases do not occur unless both copies are damaged. But it is not always so black and white.