acentric 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"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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The aberrations were classified into 8 groups: chromosome gap (G), chromosome break (B), dicentric (D), ring (R), chromatid gap (g), chromatid break (b), multiple aberrations (MA), and acentric fragment (AF).
(1986) state that the irregularity is generally associated with chromosome breakage and acentric fragments of different sizes, which may remain in the cytoplasm as micronuclei.