EVERYDAY 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.

Detailed explanation-2: -The sister chromatids attach to the spindle fibers via a structure called the kinetochore. The kinetochore is like a handle on each of the sister chromatids that the spindles can grab onto. Part of the kinetochore connects to the centromere, the structure that holds the two sister chromatids together.

Detailed explanation-3: -Kinetochores on the spindle attach to the centromeres of sister chromatids.

Detailed explanation-4: -View this answer. The correct answer: Chromatids that are attached at the centromere are called d) sister chromatids.

Detailed explanation-5: -The centromere is the part of a chromosome where the sister chromatids are linked together during the cell division. In mitosis, spindle fibres attach to the centromere via the kinetochore. Centromeres were first defined as genetic loci that direct the behaviour of chromosomes.