telocentric chromosome


Also found in: Dictionary, Thesaurus.
Related to telocentric chromosome: acrocentric, acrocentric chromosome, metacentric chromosome

tel·o·cen·tric chro·mo·some

a chromosome with a terminal centromere; such chromosomes in humans are unstable and arise by misdivision or breakage near the centromere and are usually eliminated within a few cell divisions.

telocentric chromosome

a chromosome in which the CENTROMERE is terminal (situated at one end), so that there is effectively only one arm.

telocentric chromosome

having the centromere at one end of the chromosome (terminal centromere) so that the chromosome has only one arm.
Mentioned in ?
References in periodicals archive ?
In the 2n = 45 morph, the 3rd biarmed and the first two major telocentric chromosomes resulted "orphans", being probably involved in a fusion/fission event that originated the heterozygous condition.
The female with 2n = 41 had one extra small metacentric chromosome, and lacked two telocentric chromosomes of the autosomal complement.
irradians, 5st + 11t, contained only subtelocentric and telocentric chromosomes and no metacentric or submetacentric chromosomes (Table 2).
Beaumount and Zouros (1991) postulated that the Chlamys nobilis karyotype (n = 16), which has 3 metacentric and 13 telocentric chromosomes (Komaru and Wada, 1985), may be derived from the n = 19 karyotype, by Robertsonian fusion of three pairs of telocentric chromosomes.
pythagoricus show a chromosome complement of 44 telocentric chromosomes, and 42 telocentric chromosomes in males of P.
Briefly, fusion is the consequence of breakage proximal to or within the centromere of two usually nonhomologous acro- or telocentric chromosomes followed by reunion uniting the longer and shorter segments, respectively.
Stable telocentric chromosomes formed by spontaneous misdivision in Nigella doerfleri.
marulius has 4 metacentric, 4 submetacentric and 36 telocentric chromosomes for the Thailand stock, while the Indian stock has 40 metacentric and 4 telocentric chromosomes.
This reduction in chromosome number may be because of Robertsonian fusion, wherein telocentric chromosomes fused, reducing the total chromosome number (Wang & Guo 2004).
Parallel to the increase of chromosome number, in certain aquatic organisms often an enlargement of submetacentric and telocentric chromosomes is observed, probably by chromosomal fission (Thiriot-Quievreux 1994).