A hybrid allotetraploid species (2n = 60)was backcrossed to one of the suspected parents (2n = 30).When the F1 underwent meiosis,the prophase chromosome configuration was examined.If the guess about the suspected parent was correct,what would the chromosome configuration look like?
A)30 pairs B)45 singles C)60 singles D)15 pairs and 15 singles E)30 pairs and 15 singles