If a researcher looks at a cell and notices a straight line of sister chromatids, which phase are they viewing? a. interphaseb. prophasec. prometaphased. metaphasee. anaphasef. telophase

D. metaphase

Explanation:

Cell cycle comprises 2 phases (1) Inter phase & (2) Mitotic phase.

In interphase, a cell prepares itself for cell division while in mitotic phase, a cell undergo changes which result in cell division.

Mitotic phase further contains 4 main phases which are mentioned as under:

(1) Prophase

(2) Metaphase

(3) Anaphase

(4) Telophase

In metaphase particularly, all the sister chromatids get arranged along the equitorial plate in the middle of the cell so that the replicated chromatids could be separated from each other with the help of spindle fibers. After separation, each cell i.e. mother cell and daughter cell get one copy of the duplicated chromatids.