acentric chromosome

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Related to acentric chromosome: acrocentric chromosome, telocentric chromosome
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Noun1.acentric chromosome - a chromosome lacking a centromereacentric chromosome - a chromosome lacking a centromere  
chromosome - a threadlike strand of DNA in the cell nucleus that carries the genes in a linear order; "humans have 22 chromosome pairs plus two sex chromosomes"
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In case 55, ICP established the mechanism of marker formation as a stable acentric chromosome with a neocentromere.
On the other hand, when loxP sites between sister chromatids are recombined, an acentric chromosome fragment and a dicentric chromosome harboring two centromeres are generated (Figure 1(b)).
Micronuclei (the name means 'small nucleus') are cytoplasmic bodies having a portion of acentric chromosome or whole chromosome which was not carried to the opposite poles during the anaphase.