- Types:
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monosomy
chromosomal abnormality consisting of the absence of one chromosome from the normal diploid number
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trisomy
chrosomal abnormality in which there is one more than the normal number of chromosomes in a cell
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sex-linked disorder
any disease or abnormality that is determined by the sex hormones
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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
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bleeder's disease, haemophilia, hemophilia
congenital tendency to uncontrolled bleeding; usually affects males and is transmitted from mother to son
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Turner's syndrome
a chromosomal disorder in females who have only one X chromosome; marked by dwarfism and heart abnormalities and underdeveloped sex organs
