Anaphase lag refers to the delay in the movement of chromosomes toward opposite spindle poles during cell division. This phenomenon occurs due to improper chromosome attachment to the spindle fibers, resulting in unequal distribution of genetic material to daughter cells. Some synonyms for anaphase lag include chromosome lag, mitotic lag, spindle delay, and chromosome segregation defect. These terms help describe the same event and may be used interchangeably in scientific literature. Anaphase lag is a critical factor in understanding the mechanisms of cell division and the potential effects of chromosome segregation defects on the development of genetic disorders and abnormalities.