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enEnglish
Chromosome Aberrations definition: Abnormal number or structure of chromosomes. Many chromosome aberrations, but not all, are the cause of CHROMOSOME DISORDERS.
chromosome aberration definition: irregularity in the number or structure of chromosomes that may alter the course of development.
Cytogenetic Abnormality definition: An irregularity in the number or structure of chromosomes, usually in the form of a gain (duplication), loss (deletion), exchange (translocation), or alteration in sequence (inversion) of genetic material.
chromosome disorder definition: clinical conditions caused by an abnormal chromosome constitution in which there is extra or missing chromosome material, either a whole chromosome or a chromosome segment.
Chromosome Disorders definition: Clinical conditions caused by an abnormal chromosome constitution in which there is extra or missing chromosome material (either a whole chromosome or a chromosome segment). (from Thompson et al., Genetics in Medicine, 5th ed, p429)
Chromosome Banding definition: Staining of bands, or chromosome segments, allowing the precise identification of individual chromosomes or parts of chromosomes. Applications include the determination of chromosome rearrangements in malformation syndromes and cancer, the chemistry of chromosome segments, chromosome changes during evolution, and, in conjunction with cell hybridization studies, chromosome mapping.
Chromosome Banding definition: The treatment of chromosomes to reveal characteristic patterns of horizontal bands. The banding patterns lend each chromosome a distinctive appearance so the 22 pairs of human non-sex chromosomes and the X and Y chromosomes can be identified and distinguished without ambiguity. Banding also permits the recognition of chromosome deletions (lost segments), chromosome duplications (surplus segments) and other types of structural rearrangements of chromosomes.
Chromosomes definition: In a prokaryotic cell or in the nucleus of a eukaryotic cell, a structure consisting of or containing DNA which carries the genetic information essential to the cell. (From Singleton & Sainsbury, Dictionary of Microbiology and Molecular Biology, 2d ed)
chromosome definition: in a prokaryotic cell or in the nucleus of a eukaryotic cell, a structure containing DNA which carries the genetic information essential to the cell; the bacterial chromosome is a closed circle of double stranded DNA associated with the cell membrane; nuclear chromosomes are associated with RNA, histones and non histone proteins; the normal number of chromosomes in human somatic cells is 46.
chromosome definition: (KRO-mo-some) Part of a cell that contains genetic information. Except for sperm and eggs, all human cells contain 46 chromosomes.
chromosome definition: A structure composed of a very long molecule of DNA and associated proteins (e.g. histones) that carries hereditary information. [ISBN:0198547684]
Chromosome definition: Organelle part which consists of nucleotides arranged linearly into three regions, DNA replication origin, centromere and telomere. Examples: nuclear chromosome, sex chromosome.
Chromosome definition: One of the bodies in the cell nucleus that is the bearer of genes, has the form of a delicate chromatin filament during interphase, contracts to form a compact cylinder segmented into two arms by the centromere during metaphase and anaphase stages of cell division, and is capable of reproducing its physical and chemical structure through successive cell divisions.
Chromosomes, Bacterial definition: Structures within the nucleus of bacterial cells consisting of or containing DNA, which carry genetic information essential to the cell.
Chromosomes, Human, Pair 1 definition: A specific pair of human chromosomes in group A (CHROMOSOMES, HUMAN, 1-3) of the human chromosome classification.
Chromosome 1 definition: One of the three pairs in the first group (or group A) of human chromosomes according to the current classification for humans.
Chromosomes, Human, Pair 10 definition: A specific pair of GROUP C CHROMOSOMES of the human chromosome classification.
Chromosome 10 definition: One of the seven pairs in the third group (or group C) of human chromosomes according to the current classification for humans.
Chromosomes, Human, Pair 11 definition: A specific pair of GROUP C CHROMOSOMES of the human chromosome classification.
Chromosomes, Human, Pair 12 definition: A specific pair of GROUP C CHROMOSOMES of the human chromosome classification.
Chromosomes, Human, Pair 13 definition: A specific pair of GROUP D CHROMOSOMES of the human chromosome classification.
Chromosomes, Human, Pair 14 definition: A specific pair of GROUP D CHROMOSOMES of the human chromosome classification.
Chromosome 14 definition: One of three pairs in the fourth group (or group D) of human chromosomes according to the current classification for humans.
Chromosomes, Human, Pair 15 definition: A specific pair of GROUP D CHROMOSOMES of the human chromosome classification.
Chromosomes, Human, Pair 16 definition: A specific pair of GROUP E CHROMOSOMES of the human chromosome classification.
Chromosome 16 definition: One of the three pairs in the fifth group (or group E) of human chromosomes according to the current classification for humans.
Chromosomes, Human, Pair 17 definition: A specific pair of GROUP E CHROMOSOMES of the human chromosome classification.
Chromosome 17 definition: One of the three pairs in the fifth group (or group E) of human chromosomes according to the current classification for humans.
Chromosomes, Human, Pair 18 definition: A specific pair of GROUP E CHROMOSOMES of the human chromosome classification.
Chromosomes, Human, Pair 19 definition: A specific pair of GROUP F CHROMOSOMES of the human chromosome classification.
Chromosome 19 definition: One of the two pairs in the sixth group (or group F) of human chromosomes according to the current classification for humans.
Chromosomes, Human, Pair 2 definition: A specific pair of human chromosomes in group A (CHROMOSOMES, HUMAN, 1-3) of the human chromosome classification.
Chromosome 2 definition: One of the three pairs in the first group (or group A) of human chromosomes according to the current classification for humans.
Chromosomes, Human, Pair 20 definition: A specific pair of GROUP F CHROMOSOMES of the human chromosome classification.
Chromosome 20 definition: One of the two pairs in the sixth group (or group F) of human chromosomes according to the current classification for humans.
Chromosomes, Human, Pair 21 definition: A specific pair of GROUP G CHROMOSOMES of the human chromosome classification.
chromosome 21 definition: chromosome found in a trisomic state in the cells of persons with Down syndrome.
Chromosome 21 definition: One of the two pairs in the seventh group (or group G) of human chromosomes according to the current classification for humans.
Chromosomes, Human, Pair 22 definition: A specific pair of GROUP G CHROMOSOMES of the human chromosome classification.
Chromosomes, Human, Pair 3 definition: A specific pair of human chromosomes in group A (CHROMOSOMES, HUMAN, 1-3) of the human chromosome classification.
Chromosome 3 definition: One of the three pairs in the first group (or group A) of human chromosomes according to the current classification for humans.
Chromosomes, Human, Pair 4 definition: A specific pair of GROUP B CHROMOSOMES of the human chromosome classification.
Chromosome 4 definition: One of the two pairs in the second group (or group B) of human chromosomes according to the current classification for humans.
Chromosomes, Human, Pair 5 definition: One of the two pairs of human chromosomes in the group B class (CHROMOSOMES, HUMAN, 4-5).
Chromosome 5 definition: One of the two pairs in the second group (or group B) of human chromosomes according to the current classification for humans.
Chromosomes, Human, Pair 6 definition: A specific pair GROUP C CHROMSOMES of the human chromosome classification.
Chromosome 6 definition: One of the seven pairs in the third group (or group C) of human chromosomes according to the current classification for humans.
Chromosomes, Human, Pair 7 definition: A specific pair of GROUP C CHROMOSOMES of the human chromosome classification.
Chromosome 7 definition: One of the seven pairs in the third group (or group C) of human chromosomes according to the current classification for humans.
Chromosomes, Human, Pair 8 definition: A specific pair of GROUP C CHROMOSOMES of the human chromosome classification.
Chromosome 8 definition: One of the seven pairs in the third group (or group C) of human chromosomes according to the current classification for humans.
Chromosomes, Human, Pair 9 definition: A specific pair of GROUP C CHROMSOMES of the human chromosome classification.
Chromosome 9 definition: One of the seven pairs in the third group (or group C) of human chromosomes according to the current classification for humans.
Ploidies definition: The degree of replication of the chromosome set in the karyotype.
chromosome complement definition: the whole set of chromosomes for the species.
ploidy definition: (PLOY-dee) The number of sets of chromosomes in a cell or an organism. For example, haploid means one set and diploid means two sets.
Ploidy definition: The number of chromosome set per cell.
Chromosome Breakage definition: A type of chromosomal aberration involving DNA BREAKS. Chromosome breakage can result in CHROMOSOMAL TRANSLOCATION; CHROMOSOME INVERSION; or SEQUENCE DELETION.
chromosome breakage definition: Regulated cleavage of the developing macronuclear genome at a limited number of chromosome breakage sites (CBS). The macronuclear destined segment (MDS) sequence adjacent to the CBS (or separated from it by a BES) receives a macronuclear telomere following chromosome breakage. [GOC:ns]
Chromosome Arm definition: Under the microscope chromosomes appear as thin, thread-like structures. They all have a short arm and long arm separated by a primary constriction called the centromere. The short arm is designated as p and the long arm as q.
Chromosomes, Archaeal definition: Structures within the nucleus of archaeal cells consisting of or containing DNA, which carry genetic information essential to the cell.
5q definition: Distal (long) arm of chromosome 5
8p definition: Proximal (short) arm of chromosome 8
17p definition: Proximal (short) arm of chromosome 17
18q definition: Distal (long) arm of chromosome 18
7q definition: Distal (long) arm of chromosome 7
5q31 definition: A chromosome band present on 5q
7q31 definition: A chromosome band present on 7q
17p12 definition: A chromosome band present on 17p
8p22 definition: A chromosome band present on 8p
11q definition: Distal (long) arm of chromosome 11
11q23 definition: A chromosome band present on 11q
3p definition: Proximal (short) arm of chromosome 3
artificial chromosome definition: method for cloning large pieces of DNA using plasmids, usually for gene mapping; large pieces mean fewer clones to analyze and cytogenetic mapping techniques can be used, but transfection is more difficult.
Chromosomes, Artificial definition: DNA constructs that are composed of, at least, elements such as a REPLICATION ORIGIN; TELOMERE; and CENTROMERE, that are required for successful replication, propagation to and maintenance in progeny cells. In addition, they are constructed to carry other sequences for analysis or gene transfer.
Chromosomes, Artificial, Bacterial definition: DNA constructs that are composed of, at least, a REPLICATION ORIGIN, for successful replication, propagation to and maintenance as an extra chromosome in bacteria. In addition, they can carry large amounts (about 200 kilobases) of other sequence for a variety of bioengineering purposes.
Bacterial Artificial Chromosome definition: Based upon the natural F plasmid of E. coli. Inserts up to 300 Kb can be cloned and stably maintained as circular molecules.
chloroplast chromosome definition: A circular DNA molecule containing chloroplast encoded genes. [GOC:jl]
1p definition: Proximal (short) arm of chromosome 1
14q definition: Distal (long) arm of chromosome 14
1q definition: Distal (long) arm of chromosome 1
Chromosome Cohesion definition: The faithful segregation of genetic information requires highly orchestrated changes of chromosome structure during the mitotic cell cycle. The linkage between duplicated sister DNAs is established during S phase and maintained throughout G2 phase (cohesion). In early mitosis, dramatic structural changes occur to produce metaphase chromosomes, each consisting of a pair of compacted sister chromatids (condensation). At anaphase onset, a signal is produced to disrupt the linkage between sister chromatids (separation), allowing them to be pulled apart to opposite poles of the cell. (from PubMed 10966455)
14p definition: Proximal (short) arm of chromosome 14
sister chromatid biorientation definition: The cell cycle process whereby sister chromatids establish stable attachments to microtubules emanating from opposite spindle poles. [PMID:15309047]
Chromosome Breakpoints definition: The locations in specific DNA sequences where CHROMOSOME BREAKS have occurred.
chromosome definition: Chromosome.
 
 
deGerman
Chromosom definition: [1] Biologie: eine Organisationsstruktur der DNS, dem Träger der Erbinformation
 
ltLithuanian
chromosoma definition: [1] Chromosom
 
frFrench
chromosome definition: Molécules d’ADN et de protéines présent dans le noyau des cellules servant de support à la transmission des caractères héréditaires.