chromosomal aberration

Definitions of chromosomal aberration
  1. noun
    any change in the normal structure or number of chromosomes; often results in physical or mental abnormalities
    synonyms: chromosomal anomaly, chromosonal disorder, chrosomal abnormality
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    types:
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    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
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