An allotetraploid species (2n = 60) was backcrossed to one of the suspected parental species (2n = 30). When the F1 underwent meiosis, the prophase chromosome configuration was examined. If the diploid ancestor were chosen incorrectly and had no relationship with the species under examination, what would the chromosome configuration look like? Select one: O A. 15 pairs and 15 singles O B. 60 singles OC. 30 pairs O D. 30 pairs and 15 singles O E. 45 singles