Answer :
An acrocentric chromosome has its centromere located very close to, but not on, the end of the chromosome.
A chromosome is a long DNA molecule that contains all or part of an organism's genetic material. Most eukaryotic chromosomes are composed of packaged proteins called histones, which are supported by chaperone proteins, which bind to the DNA molecule and condense to maintain its integrity.
These chromosomes exhibit a complex three-dimensional structure, which plays an important role in transcriptional regulation. Chromosomes are usually only visible under a light microscope during supermitosis (when all the chromosomes are lined up in the center of the cell in their condensed form).
Before this happens, each chromosome is duplicated (S phase) and the two copies are joined by centromeres, resulting in an X-shaped structure (above), if the centromere is horizontal or bifurcated structure, if the centromere is distant.
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