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noun, Genetics.
any irregularity or abnormality of chromosome distribution, number, structure, or arrangement.


Read Also:

  • Chromosomal instability syndrome

    chromosomal instability syndrome n. Any of a group of Mendelian inheritance conditions associated with chromosomal instability and breakage in vitro and often leading to an increased tendency to develop certain types of malignancies. Also called chromosomal breakage syndrome.

  • Chromosomal map

    chromosomal map n. A representation of the karyotype and of the positioning and ordering on it of those loci that have been localized by any of several mapping methods.

  • Chromosomal region

    chromosomal region n. The part of a chromosome defined either by anatomical details, especially by banding, or by its linkage groups.

  • Chromosomal trait

    chromosomal trait n. A trait dependent on a chromosomal aberration.

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