A Mendelian experiment consisted of breeding tall pea plants bearing violet flowers with short pea plants bearing white flowers. The progeny all bore violet flowers, but almost half of them were short. This suggests that the genetic makeup of the tall parent can be depicted as
TtVV could be the genetic makeup of the tall parent. Since half of the progenies are short, this means that the parent plant will also have a set of short genes; all progenies bore violet flowers, which means that violet colour is dominant over white.