chrosomal abnormality

Definitions of chrosomal abnormality

1. noun

   any change in the normal structure or number of chromosomes; often results in physical or mental abnormalities
   synonyms: chromosomal aberration, chromosomal anomaly, chromosonal disorder

   types:

   monosomy

   chromosomal abnormality consisting of the absence of one chromosome from the normal diploid number

   trisomy

   chrosomal abnormality in which there is one more than the normal number of chromosomes in a cell

   sex-linked disorder

   any disease or abnormality that is determined by the sex hormones

   Down syndrome, Down's syndrome, mongolianism, mongolism, trisomy 21

   a congenital disorder caused by having an extra 21st chromosome; results in a flat face and short stature and mental retardation

   bleeder's disease, haemophilia, hemophilia

   congenital tendency to uncontrolled bleeding; usually affects males and is transmitted from mother to son

   Turner's syndrome

   a chromosomal disorder in females who have only one X chromosome; marked by dwarfism and heart abnormalities and underdeveloped sex organs

   type of:

   aberrance, aberrancy, aberration, deviance

   a state or condition markedly different from the norm