LIFE SCIENCE

Detailed explanation-1: -The two “sister” chromatids are joined at a constricted region of the chromosome called the centromere. During cell division, spindle fibers attach to the centromere and pull each of the sister chromatids to opposite sides of the cell. Soon after, the cell divides in two, resulting in daughter cells with identical DNA.

Detailed explanation-2: -centromeres. … that holds together the two chromatids (the daughter strands of a replicated chromosome). The centromere is the point of attachment of the kinetochore, a structure to which the microtubules of the mitotic spindle become anchored.

Detailed explanation-3: -centromere, structure in a chromosome that holds together the two chromatids (the daughter strands of a replicated chromosome).

Detailed explanation-4: -After DNA is replicated each chromosome consists of paired sister chromatids held together by cohesin.