The chemicals nonylphenol and BPA both disrupt cell cycles resulting in chromosomal abnormalities. Under normal conditions, each round of mitosis should result in two identical daughter cells. If you were to observe a cell containing 3 pairs of homologous chromosomes during a normal cell cycle, how many sister chromatids would you expect to find when mitosis begins?
12 sister chromatids
6 sister chromatids
9 sister chromatids
3 sister chromatids