homologous chromosomes are separated and are being pulled to opposite ends of the spindle poles.
Work Step by Step
During anaphase I, homologous chromosomes are no longer paired up. Instead, microtubule fibers of the spindles are pulling them apart. In anaphase II, the sister chromatids of each chromosome is being pulled apart. Since the image depicts homologous chromosomes being pulled apart, this particular cell is in anaphase I.