chromatid

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Related to Chromatids: Sister chromatids

chromatid

 [kro´mah-tid]
either of two parallel filaments joined at the centromere that make up a chromosome and that divide in cell division, each going to a different pole of the dividing cell and each becoming a chromosome of one of the two daughter cells.

chro·ma·tid

(krō'mă-tid),
Each of the two strands formed by longitudinal duplication of a chromosome that becomes visible during prophase of mitosis or meiosis; the two chromatids are joined by the still undivided centromere; after the centromere has divided at metaphase and the two chromatids have separated, each chromatid becomes a chromosome.
[G. chrōma, color, + -id (2),]

chromatid

/chro·ma·tid/ (kro´mah-tid) either of two parallel, spiral filaments joined at the centromere which make up a chromosome.

chromatid

(krō′mə-tĭd)
n.
Either of the two daughter strands of a replicated chromosome that are joined by a single centromere and separate during cell division to become individual chromosomes.

chromatid

[krō′mətid]
Etymology: Gk, chroma, color
one of the two identical, threadlike filaments of a chromosome. Chromatids are produced by the self-replication of the chromosome during interphase and are held together by a common centromere. During anaphase of mitosis and meiosis II, the chromatids separate to become daughter chromosomes.

chro·ma·tid

(krō'mă-tid)
Each of the two strands formed by longitudinal duplication of a chromosome that becomes visible during prophase of mitosis or meiosis; the two chromatids are joined by the still undivided centromere; after the centromere has divided at metaphase and the two chromatids have separated, each chromatid becomes a chromosome.
[G. chrōma, color, + -id (2),]

chromatid

One of the two duplicated copies of a chromosome produced by replication while still connected at the CENTROMERE before separation at the subsequent cell division. Each chromatid becomes a new chromosome.
Chromatidclick for a larger image
Fig. 102 Chromatid . (a) Before duplication. (b) After duplication.

chromatid

one of a pair of duplicated CHROMOSOMES produced during the ‘S’ phase of the CELL CYCLE, which are joined together at the CENTROMERE. See Fig. 102 . During nuclear division the centromere splits (in anaphase of mitosis, anaphase 2 of MEIOSIS) to produce two separate chromosomes.

chromatid

either of two parallel filaments joined at the centromere which make up a chromosome, and which divide in cell division, each going to a different pole of the dividing cell and each becoming a chromosome of one of the two daughter cells.

sister chromatid
a chromatid formed by a replicating chromosome during interphase; because they are derived from the one homolog and joined at the center they are exact copies of each other.
References in periodicals archive ?
Dialysis-related genotoxicity: sister chromatid exchanges and DNA lesions in T and B lymphocytes of uremic patients.
pole after the first meiotic division; and 4) Chromatids must separate
Protective effect of (-)-epigallocatechingallate and (+) catechin on nitrogen oxide-induced sister chromatid exchange.
For instance, the sister chromatids do not separate at the anaphase stage of mitosis in the case of mutants that fail to undergo cleavage of cohesion (Hodges et al.
In Darlington's words describing Chorthippus meiosis: 'All the chiasmata move away from the centromeres to the ends and give terminal chiasmata; and if two are formed between one pair of arms they fuse at the ends, the penultimate association of chromatids replacing the ultimate one at the terminal chiasma' (Darlington 1959).
Chromosome fragmentation: Zeljezic and Garaj-Vrhovac (2004) reported that 2,4-D caused an increase in chromatid and chromosome breaks, number of micronuclei and number of nuclear buds.
In addition, the chromosomes replicate such that each chromosome consists of two identical chromatids joined at the centromere.
As the chromosomes reach this most condensed and shortest condition, these double strands become visible as two chromatids connected by a noncondensed area called the centromere.
Polyploidy might have occurred due to complete inhibition of spindle formation resulting in the failure of separation of chromatids and confinement of chromosomes within one nucleus [18].
1] cells contained chromosomes with both sister chromatids stained uniformly dark.
This is the region where chromatids join during the phases of cell division.
By late diakinesis, the X and Y chromosomes are separated from each other, become isopycnotic and each is composed of two sister chromatids (Ueshima, 1979; Papeschi & Bressa, 2006).