metacentric chromosome


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Related to metacentric chromosome: holocentric chromosome, submetacentric chromosome

met·a·cen·tric chro·mo·some

a chromosome with a centrally placed centromere that divides the chromosome into two arms of approximately equal length.

met·a·cen·tric chro·mo·some

(met'ă-sen'trik krō'mŏ-sōm)
A chromosome with a centrally placed centromere that divides the chromosome into two arms of approximately equal length.
[meta- + G. kentron, circle]

metacentric chromosome

a chromosome having the CENTROMERE located about halfway along. Compare ACENTRIC CHROMOSOME.
References in periodicals archive ?
3] fluorochrome staining showed interstitial marking on the long arm of the fourth pair of metacentric chromosomes for the 3 species, indicating that this region is rich in GC base pairs (Fig.
C-bands produced by barium hydroxide using propidium iodide were observed in telomeres of the short arms of a large metacentric chromosome (chromosome pair 3) and in the short arms of a submetacentric chromosome (chromosome pair 5).
The few cytogenetically studied species of Pholcidae and other haplogyne families exhibit karyotypic peculiarities, such as predominantly metacentric chromosome morphology and X/XX sex determination chromosome system, that contrasts with those of Entelegynae.
In addition, the ratio between the total length of metacentric chromosomes and that of the submetacentric chromosomes of H.
diversicolor supertexta marker chromosomes, (2) chromosome pairing, (3) the number of chromosomes of each type, and (4) the ratio between the total length of metacentric chromosomes and submetacentric chromosomes.
2003) verified that species with lower chromosome numbers have metacentric chromosomes, while species with higher chromosome numbers have predominantly acrocentric and pseudo-acrocentric chromosomes.
Most clams studied so far have 19 pairs of metacentric chromosomes (76 chromosome arms), whereas some have significantly reduced chromosome numbers or arms.
corrugata, has a 10M + 7SM + 1ST (metacentric + submetacentric + subtelocentric), which has the greatest proportion of metacentric chromosomes, and the lowest number of submetacentric chromosomes.
3) can be classified as consisting of 10 pairs of metacentric chromosomes, 3 pairs metacentric-submetacentric, 4 pairs submetacentric, and 1 pair submetacentric-subtelocentric (tending to subtelocentric because of its confidence interval).
The karyotype consisted of eight pairs of metacentric chromosomes, eight pairs of submetacentric, one pair submetacentric/metacentric, and one pair of subtelocentric chromosomes.