Question

why is the centromere change its position in easy words ​

Answer 1

Answer:

As previously mentioned, the centromere is easily visualized as the most constricted region of a condensed mitotic chromosome. Although the word "centromere" is derived from the Greek words centro ("central") and mere ("part"), centromeres are not always found in the center of chromosomes. In fact, only so-called metacentric chromosomes have centromeres at their middle; in other chromosomes, centromeres are located at a variety of positions that are characteristic for each particular chromosome (Figure 2). The position of the centromere, therefore, provides a useful landmark for dividing chromosomes into karyotype groups and for establishing a standardized nomenclature for mapping the positions of genes on chromosomes.