what is aneuploidy
Aneuploidy is the presence of an abnormal number of chromosomes in a cell, such as having 45 or 47 chromosomes when 46 is expected.It does not include a difference of one or more complete sets of chromosomes, which is called euploidy.ost cells in the human body have 23 pairs of chromosomes, or a total of 46 chromosomes. (The sperm and egg, or gametes, each have 23 unpaired chromosomes, and red blood cells have no nucleus and no chromosomes.). One copy of each pair is inherited from the mother and the other copy is inherited from the father.