acrocentric


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Related to acrocentric: telocentric, submetacentric chromosome

acrocentric

 [ak″ro-sen´trik]
having the centromere toward one end of the replicating chromosome.

ac·ro·cen·tric

(ak'rō-sen'trik),
Having the centromere close to one end; said of normal chromosomes 13-15 and 21-22.
[acro- + G. kentron, center]

acrocentric

/ac·ro·cen·tric/ (-sen´trik) having the centromere toward one end of the replicating chromosome so that one arm is much longer than the other.

acrocentric

(ăk′rō-sĕn′trĭk)
adj.
Having the centromere located near one end of the chromosome so that one chromosomal arm is long and the other is short.

ac′ro·cen′tric n.

acrocentric

[ak′rōsen′trik]
Etymology: Gk, akron, extremity, kentron, center
pertaining to a chromosome in which the centromere is located near one of the ends so that the arms of the chromosome are extremely uneven in length. Compare metacentric, submetacentric, telocentric.

Acrocentric

Referring to a centromere located near the end of a chromosome.

ac·ro·cen·tric

(ak'rō-sen'trik)
Having the centromere close to one end; said of a normal chromosome.
[acro- + G. kentron, center]

acrocentric

(of a chromosome) having the CENTROMERE near one end, making one chromosome arm much longer than the other.

acrocentric

having the centromere toward one end of the chromosome or chromatid; see telocentric chromosome.
References in periodicals archive ?
The fused chromosome is metacentric, having one arm that corresponds to the former X, and the other to the acrocentric autosome with which it was fused.
2] with metacentric autosomes and acrocentric sex chromosomes; Srivastava & Shukla (1986) observed 2n = 25 = 12II + X but did not provide any information regarding chromosome morphology, and finally Parida & Sharma (1987) and Shar ma & Parida (1987) reported the presence of 2n = 23 = 11II + X, also with no description of chromosome morphology.
X chromosome morphololgy: acrocentric (0), metacentric (1), submetacentric (2).
One extra, small acrocentric chromosome was detected in an aneuploid To plant (Line Number 34; 26 chromosomes) and in a tetraploid [T.
It is noteworthy that this pattern of a large number of small acrocentric chromosomes has rarely been observed in ants.
Silver-staining analysis revealed the activity of nucleolar organizer regions (NORs) on the short arms of both acrocentric chromosomes of autosomal pair number 6; the presumptive sex chromosomes did not show NOR activity (Fig.
It consists of one metacentric (M; pair 1), 5 submetacentric (SM; pairs 2 to 6) and 18 acrocentric (A; pairs 7 to 24).
To estimate the relative frequency of nondisjunction and malsegregation, secondary spermatocytes (metaphase II cells, MII) were scored for the number of metacentric and acrocentric macrochro-mosomes and presence of either the Y or two X chromosomes.
The six largest pairs of autosomes and autosome 20 were biarmed, and the rest were acrocentric.
The neo-sex system resulted from an X/L3 fusion which has converted the acrocentric X element into a metacentric neo-X, while the unfused L3 autosome behaves as a neo-Y element.
1964) as follows: metacentric (M), submetacentric (SM) and subtelocentric (ST) chromosomes were considered biarmed and acrocentric chromosomes uniarmed.