Pruitt of Purdue University study Arabidopsis whose petals are fused.Such plants have two mutant copies of a gene called hothead, which differ from the normal gene by a single base pair.

• Pruitt），研究一种花瓣黏合的阿拉伯芥品系，这些植物带有一对突变的hothead基因，这种突变基因中有一对碱基与正常的不同。