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单词 karyotype
释义

karyotype


kar·y·o·type

K0019200 (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. kar·y·o·typed, kar·y·o·typ·ing, kar·y·o·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.

karyotype

(ˈkærɪəˌtaɪp) n (Biology) the appearance of the chromosomes in a somatic cell of an individual or species, with reference to their number, size, shape, etcvb (tr) (Biology) to determine the karyotype of (a cell) karyotypic, ˌkaryoˈtypical adj

kar•y•o•type

(ˈkær i əˌtaɪp)

n. the chromosomes of a cell, usu. displayed as a systematized arrangement of chromosome pairs in descending order of size. [1925–30] kar`y•o•typ′i•cal, adj.

kar·y·o·type

(kăr′ē-ə-tīp′) The number and shape of chromosomes in the nucleus of a cell. Scientists prepare karyotypes by staining cell nuclei, placing them on slides, and then photographing them through a microscope. Images of the chromosomes can then be grouped by size using a computer. Karyotypes are used to study the genetic makeup of an individual.

karyotype

the aggregate of morphological characteristics of the chromosomes in a cell. — karyotypic, karyotypical, adj.See also: Cells

karyotype


Past participle: karyotyped
Gerund: karyotyping
Imperative
karyotype
karyotype
Present
I karyotype
you karyotype
he/she/it karyotypes
we karyotype
you karyotype
they karyotype
Preterite
I karyotyped
you karyotyped
he/she/it karyotyped
we karyotyped
you karyotyped
they karyotyped
Present Continuous
I am karyotyping
you are karyotyping
he/she/it is karyotyping
we are karyotyping
you are karyotyping
they are karyotyping
Present Perfect
I have karyotyped
you have karyotyped
he/she/it has karyotyped
we have karyotyped
you have karyotyped
they have karyotyped
Past Continuous
I was karyotyping
you were karyotyping
he/she/it was karyotyping
we were karyotyping
you were karyotyping
they were karyotyping
Past Perfect
I had karyotyped
you had karyotyped
he/she/it had karyotyped
we had karyotyped
you had karyotyped
they had karyotyped
Future
I will karyotype
you will karyotype
he/she/it will karyotype
we will karyotype
you will karyotype
they will karyotype
Future Perfect
I will have karyotyped
you will have karyotyped
he/she/it will have karyotyped
we will have karyotyped
you will have karyotyped
they will have karyotyped
Future Continuous
I will be karyotyping
you will be karyotyping
he/she/it will be karyotyping
we will be karyotyping
you will be karyotyping
they will be karyotyping
Present Perfect Continuous
I have been karyotyping
you have been karyotyping
he/she/it has been karyotyping
we have been karyotyping
you have been karyotyping
they have been karyotyping
Future Perfect Continuous
I will have been karyotyping
you will have been karyotyping
he/she/it will have been karyotyping
we will have been karyotyping
you will have been karyotyping
they will have been karyotyping
Past Perfect Continuous
I had been karyotyping
you had been karyotyping
he/she/it had been karyotyping
we had been karyotyping
you had been karyotyping
they had been karyotyping
Conditional
I would karyotype
you would karyotype
he/she/it would karyotype
we would karyotype
you would karyotype
they would karyotype
Past Conditional
I would have karyotyped
you would have karyotyped
he/she/it would have karyotyped
we would have karyotyped
you would have karyotyped
they would have karyotyped
Thesaurus
Noun1.karyotype - the appearance of the chromosomal makeup of a somatic cell in an individual or species (including the number and arrangement and size and structure of the chromosomes)physical composition, composition, make-up, makeup, constitution - the way in which someone or something is composed
Translations

Karyotype


karyotype

[′kar·ē·ə‚tīp] (cell and molecular biology) The complement of chromosomes characteristic of an individual, species, genus, or other grouping. An organized array of the chromosomes from a single cell, grouped according to size, centromere position, and banding pattern, if any.

Karyotype

 

chromosome set, the aggregate features of the chromosomes (numaber, size, shape, details of microscopic structure) in the cells of an organism of a given species.

The concept of the karyotype was introduced by the Soviet geneticist G. A. Levitskii in 1924. The karyotype is one of the most important genetic characteristics of a species, since every species has a particular karyotype that is different from that of related species (karyosystematics, a new branch of systematics, is based on this phenomenon). The fixed nature of the karyotype in the cells of a given organism is ensured by mitosis and, within a given species, by meiosis. The karyotype of an organism may change if the gametes are altered by mutation. The karyotype of individual cells sometimes differs from the species karyotype because of chromosomal or genomic somatic mutations. The karyotype of diploid cells consists of two haploid sets (genomes) from each parent; each chromosome of such a set has a homologue from the other set. The karyotype of males may differ from that of females in the shape (sometimes also in number) of the sex chromosomes, in which case they are described separately.

The chromosomes in a karyotype are studied during the metaphase stage of mitosis. The description of a karyotype must be accompanied by a microphotograph or sketch. In systematizing karyotypes, the pairs of homologous chromosomes are arranged (for example) in order of decreasing length, beginning with the longest pair. The pairs of sex chromosomes are put at the end of the series. Pairs of chromosomes of equal length are identified by the position of the centromere (primary constriction), which divides the chromosome into two arms, by the position of the nucleolar organizer (secondary constriction), and by the shape of the satellite. The karyotypes of several thousand species of plants (wild and cultivated) and animals and man have been studied.

REFERENCES

Rukovodstvo po tsitologii, vol. 2. Edited by A. S. Troshin. Moscow-Leningrad, 1966.
Lobashev, M. E. Genetika, 2nd ed. Leningrad, 1967.

IU. F. BOGDANOV

karyotype


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.Mentioned in: Down Syndrome, Genetic Testing

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


  • noun

Words related to karyotype

noun the appearance of the chromosomal makeup of a somatic cell in an individual or species (including the number and arrangement and size and structure of the chromosomes)

Related Words

  • physical composition
  • composition
  • make-up
  • makeup
  • constitution
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