karyotype

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Related to Chromosome morphology: Karyogram

karyotype

 [kar´e-o-tīp]
the chromosomal constitution of the cell nucleus; by extension, the photomicrograph of chromosomes arranged. See also illustration at chromosome.
Preparation of a karyotype. From Mueller and Young, 2001.

kar·y·o·type

(kar'ē-ō-tīp),
The chromosome characteristics of an individual cell or of a cell line arranged in descending order of size and according to the position of the centromere. Usually presented as a systematized array of metaphase chromosomes from a photomicrograph of a single cell nucleus.
Synonym(s): idiogram (1) , karyogram
[karyo- + G. typos, model]

karyotype

(kăr′ē-ə-tīp′)
n.
1. The characterization of the chromosomal complement of an individual or a species, including number, form, and size of the chromosomes.
2. A photomicrograph of chromosomes arranged according to a standard classification.
tr.v. karyo·typed, karyo·typing, karyo·types
To classify and array (the chromosome complement of an organism or a species) according to the arrangement, number, size, shape, or other characteristics of the chromosomes.

kar′y·o·typ′ic (-tĭp′ĭk), kar′y·o·typ′i·cal adj.

kar·y·o·type

(kar'ē-ō-tīp)
The chromosome characteristics of an individual cell or of a cell line, usually presented as a systematized array of metaphase chromosomes from a photomicrograph of a single cell nucleus arranged in pairs in descending order of size and according to the position of the centromere.
Synonym(s): idiogram (1) .
[karyo- + G. typos, model]

karyotype

1. The individual chromosomal complement of a person or species. The genome.
2. The CHROMOSOMES of an individual set out in a standard pattern and obtained from a photomicrograph taken in METAPHASE that has been edited with software so that the separate chromosomes are arranged in numerical order. This is done for the diagnosis of chromosomal disorders, as in prenatal detection of fetal abnormality.

karyotype

the CHROMOSOME complement of a cell or organism, characterized by the number, size and configuration of the chromosomes as seen during metaphase of MITOSIS.

Karyotype

A standard arrangement of photographic or computer-generated images of chromosome pairs from a cell in ascending numerical order, from largest to smallest.

kar·y·o·type

(kar'ē-ō-tīp)
The chromosome characteristics of an individual cell or of a cell line, usually presented as a systematized array of metaphase chromosomes from a photomicrograph of a single cell nucleus arranged in pairs in descending order of size and according to the position of the centromere.
Synonym(s): idiogram (1) .
[karyo- + G. typos, model]
References in periodicals archive ?
Both chromosomes have heterochromatin on the centromere of this homeologous chromosome pair, while duplication of a portion of the centromeric heterochromatin may have modified the chromosome morphology. However, variations in the euchromatic regions cannot be disregarded.
The differences noted in chromosome morphology and heterochromatin distribution patterns revealed by a comparison of the Atta species assessed in the present study with Ac.
This chromosome morphology, considered structurally divergent from the basal pattern, in which acrocentric chromosomes prevail, appear to have contributed towards the reduction of the karyotypic diversification, frequently found in other species of Rivulidae.
inermis, although chromosome morphology is quite similar.
It was not possible to identify all the chromosomes of polyploid bromegrasses, especially the ones with higher ploidy levels (octaploid) and separate the chromosomes into genomes based on C-banding patterns and chromosome morphology. However, it may be possible to separate chromosomes of polyploid B.
2002); Mesabolivar luteus (Keyserling 1891) showed 2n = 15 = 7II + X in males and 2n = 16 = 7II + XX in females with a metacentric chromosome morphology; in the male specimens of Micropholcus fauroti (Simon 1887), the diploid number was 2n = 17 = 8II + X, with the chromosomes being described as biarmed (Araujo et al.
Existing karyotypic descriptions for pholcid species (Table 1) show that the diploid number varies from 2n = 15 to 2n = 32, that the predominant chromosome morphology is metacentric and that the most frequent SDCS is of the X/XX type.
In this sense, the difference found in our data could be largely derived from the continuous changes of chromosome morphology produced during the cell cycle.
We have described here a fluorescent imaging method for analyzing chromosome morphology and especially chromosomal DNA contents.
The cells were photographed under a Zeiss microscope and the chromosome morphology classification was determined according to Levan et al.
Our objective was to produce C-banding karyotypes of Arrhenatherum accessions to compare chromosome morphology with previously C-banded Arena species (Jellen et al., 1993a,b; Jellen and Gill, 1996; Jellen and Ladizinsky, 2000) and to determine the number of NOR ribosomal DNA (45S rDNA) sites using fluorescence in situ hybridization (FISH).
Not all seven of the chromosome groups could be clearly identified in these accessions due to a general lack of chromosome-specific banding patterns and relatively uniform chromosome morphology. In addition, the karyotypes revealed relatively few C-banding polymorphisms or likely rearrangements among the different accessions, with the notable exception of A.