Worlds of David Darling
Encyclopedia of Science
Home > Encyclopedia of Science


structure of chromosome
The centromere is the constricted region, containing no genes, near the center of a human chromosome that appears only during cell division. When chromosomes shrink during meiosis or mitosis, the centromere is the region of the chromosome where the two sister chromatids are joined to one another. It also connects the chromosomes to the spindle fibers.

Related category


Source: National Human Genome Research Institute