Answer:
A chromosome that possesses two centromeres is called a dicentric chromosome. Dicentric chromosomes are often formed when a chromosome undergoes a structural change, such as a translocation, inversion, or deletion, resulting in the fusion of two chromosomes or the duplication of a chromosome segment. The presence of two centromeres in a dicentric chromosome can lead to problems during cell division, as the chromosome may be pulled in two different directions, causing DNA damage and chromosomal instability.