metacentric


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Related to metacentric: metacenter, metacentric chromosome

metacentric

 [met″ah-sen´trik]
having the centromere almost at the middle of the replicating chromosome.

met·a·cen·tric

(met'ă-sen'trik),
Having the centromere about equidistant from the extremities, said of a chromosome.
[meta- + G. kentron, circle]

metacentric

(mĕt′ə-sĕn′trĭk)
adj.
1. Of or relating to a metacenter.
2. Genetics Having the centromere in the median position so that the arms are of equal length. Used of a chromosome.
n.
A metacentric chromosome.

met′a·cen·tric′i·ty (-sĕn-trĭs′ĭ-tē) n.

metacentric

adjective
(1) Referring to a centromere located at a chromosome’s midpoint.
(2) Referring to a chromosome with arms of equal length—i.e., equidistant from a chromosome’s centromere.

metacentric

Of a chromosome in which the CENTROMERE is at or near the centre.
References in periodicals archive ?
chirurgus are available, thus hindering the minimum time span after Robertsonian rearrangements that gave rise to the large metacentric chromosomes, herein referred as a single trait.
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).
In the few species which have been recorded with a [X.sub.1][X.sub.2]Y ([male]) [X.sub.1][X.sub.1][X.sub.2][X.sub.2] ([female]) sex-chromosome determining mechanism, a second centric fusion took place between the neo-Y and an acrocentric autosome Bl (of the B1B2 autosomic pair from the standard karyotype) of a B1B2 autosome pair; this occurred in such a way that the Y turned metacentric, while the unfused B2 autosome behaved as an acrocentric [X.sub.2], as observed in D.
Also, the common occurrence of an interstitial segment in the long arm of a medium-sized metacentric pair, being more evident in some chromosomes than in others, is a characteristic that has not been observed in other piranha genera and that has been suggested as a probable sinapomorphy in the genus Serrasalmus.
This is caused by an association between areas of oak forest and local populations with high frequencies of metacentric chromosomes (i.e., F5-like, see [ILLUSTRATION FOR FIGURE 8 OMITTED]).
In metaphases submitted to fluorochrome staining 2 common CMA3 markings were observed in the pericentromeric regions of a metacentric pairs, in each of the observed karyotypes.
Chromosome analysis of Giemsa-stained preparations showed a karyotype 2n=40 (n=10 individuals) with 16 pairs of metacentric biarmed chromosomes and four pairs of submetacentrics.
([dagger]) Fundamental Number estimated as two for metacentric and submetacentric chromosome, and one for subtelocentric and telocentric chromosome.
This increase in 2n, which is presumably occurred as a result of Robertsonian fission, i.e., metacentric fission, could be explained in terms of speciation and adaptation to environmental conditions, particularity the aridity and relatively high temperature characterizing El-Hammam region (Shahin et al., 2018).
As per the boats float (z [approximately equal to] 0) and they are lengthy and laterally metacentric ([phi] = [theta] = [phi] = [theta] [approximately equal to] 0), the heave, roll, and pitch dynamics are discarded.
But these results need to be confirmed and verified in a large metacentric study.