Solution: In this situation, non-sister chromatids can cross over. Crossing over always takes place between two non-sister chromatids and never between two sister chromatids. Sister chromatids of the homologous chromosome.
Solution: In this situation, non-sister chromatids can cross over. Crossing over always takes place between two non-sister chromatids and never between two sister chromatids. Sister chromatids of the homologous chromosome.