cytogenetics

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cytogenetics

 [si″to-jĕ-net´iks]
that branch of genetics devoted to the cellular constituents concerned in heredity, i.e., the chromosomes.
clinical cytogenetics the branch of cytogenetics concerned with relations between chromosomal abnormalities and pathologic conditions.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

cy·to·ge·net·ics

(sī'tō-jĕ-net'iks),
The branch of genetics concerned with the structure and function of the cell, especially the chromosomes.

Cytogenetics arose as a fusion of 19th-century cytology and 20th-century genetics, which came into being in 1903 with the articulation of the chromosome theory of inheritance. The developing field concerned itself with detailing the behavior of chromosomes and their functional subunits, the genes, during reproduction, and with relating that behavior statistically to characteristics of the resulting cells or animals. Modern molecular cytogenetics involves the microscopic study of chromosomes that have been fixed in mitosis and stained with various agents to delineate characteristic bands. DNA probes can be applied to locate specific gene sequences. Karyotyping is the arrangement of photographs of stained chromosomes in a standard format. Cytogenetic techniques are used to test for inborn errors of metabolism and genomic aberrations such as Down syndrome and to determine sex in cases where anatomy is inconclusive.

Farlex Partner Medical Dictionary © Farlex 2012

cytogenetics

(sī′tō-jə-nĕt′ĭks)
n. (used with a sing. verb)
The branch of genetics that deals with the cellular components, particularly chromosomes, that are associated with heredity.

cy′to·ge·net′ic, cy′to·ge·net′i·cal adj.
cy′to·ge·net′i·cal·ly adv.
cy′to·ge·net′i·cist (-sĭst) n.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

cy·to·ge·net·ics

(sī'tō-jĕ-net'iks)
The branch of genetics concerned with the structure and function of the cell, especially the chromosomes. Modern molecular cytogenetics involves the microscopic study of chromosomes that have been arranged as karyotypes. Individuals can be classified according to characteristic banding patterns that appear when the karyotypes are exposed to some dyes. In addition, DNA probes may be applied to locate specific gene sequences. Cytogenetic techniques are used to test for inborn errors of metabolism, for disorders such as Down syndrome, and to determine sex in cases where anatomy is inconclusive.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

cytogenetics

the study of the inheritance of cells and their chromosomes. Cytogenetic analysis of foetal cells (see AMNIOCENTESIS and CYSTIC FIBROSIS) is used to assess potential risks to the baby.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
Fenocchio, "Cytogenetical and morphological features reveal significant differences among Venezuelan and Brazilian samples of Mugil curema (Teleostei: Mugilidae)," Neotropical Ichthyology, vol.
stephensi and Chaudhry and co-workers described current technologies (molecular, cytogenetical and morphological) available to identify this species.
This hypothesis could be tested by a molecular phylogenetic study and/or cytogenetical analysis of this group.
Apart from the co-adapted lock and-key arrangements of external genitalia of conspecific females and males, one must try to analyse the role and formulae of pheromones that appear to function for specific sexual purposes either by contact (3) or remotely epigamic behaviour of mosquitoes including male swarming and inter-sexual communication by sight and specific sounds (4-6) as well as the cytogenetical and physiological systems.
The aim of this study is to ascertain the cytogenetical relationships of three abalone species from California.
Cytogenetical and molecular inferences about the evolution of wheat, p.
Cytogenetical observations in human benign uterine leiomyomas.
Molecular (Apfelbaum & Blanco 1984; Apfelbaum & Reig 1989), ecological (Ojeda 1989) and cytogenetical (Bianchi et al.
Cytogenetical data on spiders are important from the perspective of understanding their evolution.
Moutschen, "Genetic and cytogenetical effects of formaldehyde and related compounds," Mutation Research/Reviews in Genetic Toxicology, vol.