Answer:
Sister chromatids, centromere.
Explanation:
Sister chromatids are defined as the identical copies of the chromatids which is synthesized by the DNA replication of the DNA. A pair of sister chromatids called as dyad. A full set of sister chromatids synthesized during the S phase of the interphase, when in a cell all chromosome are replicated.
Centromere are defined as the specialized DNA sequence of a chromosome which helps to link a pair of sister chromatids. During the process of mitosis, and spindle fiber attached to the centromere with the help of kinetochore.
