Definition
A chromatid is one half of a duplicated chromosome. Before replication, one chromosome is composed of one DNA molecule. In replication, the DNA molecule is copied, and the two molecules are known as chromatids. During the later stages of cell division these chromatids separate longitudinally to become individual chromosomes.
Related concepts
Acentric fragmentAcrocentricAnaphaseAneuploidyAutosomeB chromosomeCENPACENPC1CENPC2CENPFCENPHCENPICENPJCENPKCENPMCENPNCENPOCENPPCENPQCENPTCentromereCentromere protein BCentromere protein EChiasma (genetics)ChromatinChromosomal crossoverChromosomal inversionChromosomal translocationChromosomeChromosome abnormalityCircular bacterial chromosomeCytogeneticsDNADNA damage (naturally occurring)DNA repairDNA synthesisDicentric chromosomeDinokaryonEuchromatinExtrachromosomal DNAGenomeHeterochromatinHistoneHistone H1Histone H2AHistone H2BHistone H3Histone H4Holocentric chromosomeHomologous chromosomeHomologous chromosome pairInternational System for Human Cytogenomic NomenclatureIsochromosomeKaryogramKaryotypeKinetochoreLampbrush chromosomeLinear chromosomeList of organisms by chromosome countList of sequenced eukaryotic genomesMeiosisMetaphaseMicrochromosomeMitosisMonocentricNuclear organizationNucleosomePaleopolyploidyPlasmidPloidyPolycentric chromosomePolyploidizationPolyploidyPolytene chromosomeProphase IProtamineS phaseSatellite chromosomeSex-determination systemSex chromosomeSexual reproductionSister chromatidSister chromatid exchangeSister chromatidsSmall supernumerary marker chromosomeSubmetacentricTINF2TelocentricTelomereTelomere-binding proteinZygosity
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