Answer:
Explanation:
The genetic disease in which (i) the 23rd pair of chromosomes is always involved, (ii) there are always two chromosomes that comprise the 23rd pair, and (iii) there is always something wrong with one or both of the chromosomes is called a Genetic abnormality.
A genetic abnormality is happens by one or more abnormalities in the genome. It can be occurred by a mutation in a single gene or multiple genes or by a chromosomal abnormality.
