chromatid


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Related to chromatid: chromomere

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 ?
ratios can be predicted from chromosome and random chromatid segregation
High frequency of sister chromatid exchanges in lymphocytes of the patients with Behcet's disease.
did not induce any chromosomal aberration in bone marrow cells of mice; there were no significant differences observed in sister chromatid exchange and micronuclei formation tests at the same dose levels.
This tether effectively increases the size of sister chromatids during anaphase.
Giri AK, Khan KA (1996) Chromosome aberrations, sister chromatid exchange and micronuclei formation analysis in mice after in-vivo exposure to Bacoside A and B.
2005), and sister chromatid exchange measured in peripheral lymphocytes (Yang et al.
coli, sister chromatid exchange with cultured mammalian cells, and the micronucleus test with mice, as well as in an in vivo cytogenic study using mouse bone marrow.
Chromosomal aberrations and sister chromatid exchanges in individuals exposed to arsenic through drinking water in West Bengal, India.
Weitberg AB (1989) Effect of combination of antioxidants on phagocyte-induced sister chromatid exchanges.
As shown in Table 3, CAs were barely detectable in nonexposed cells, whereas both chromatid and chromosome-type breaks were frequently observed in cells exposed to arsenite.
Influence of erythrocyte glutathione-S transferase T1 on sister chromatid exchanges induced by diepoxybutane in cultured human lymphocytes.
Sister chromatid exchange and micronucleus frequency in human lymphocytes of 1,650 subjects in an Italian population.