Acentric fragments:
Acentric fragments are those DNA fragments without a centromere. These fragments occur, due to chromosomal rearrangements in the cell. These fragments do not contain a centromere; hence, they are not aligned to either pole during meiosis.
The spindle fibers that are vital in pulling sister chromatids apart cannot attach to the chromosomes in the absence of the centromere. Even during mitosis, these chromosomes face a problem of alignment.
At the end of cell division, these acentric chromosomes will get left out.
Thus, acentric chromosomes fragments do not contain a centromere and are not inherited and left in the cytoplasm.