Floral homeotic mutations in Arabidopsis

Wild-type Arabidopsis ’“ \ Whorl 1 sepals t Whorl 2 petals .. f Whorl 3 stamens Whorl 4 carpels A-(lass mutant (apeta/a2) Whorl 1 carpels Whorl 2 stamens Whorl 3 stamens Whorl 4 carpels B-class mutant (apetala3 or pistil/ata) \ , fi~ \ ——Whorl 1 sepals \ «a ‘ Q Whorl 2 sepals \ ~ \ Whorl 3 carpels s Whorl 4 carpels C-class mutant ‘ f K“ \ (agamous) ‘\ —— h I 1 als _, W \\ \ WhorI 2 sep I ' W or peta s \k X Whorl 3 petals Whorl 4 sepals 8C double mutant (apetala3 agamous) ill—Whorl 1 sepals Whorl 2 sepals Whorl 3 sepals Whorl 4 sepals AC double mutant (apetala2 agamous) Whorl 1 leaf-like carpels Whorl 2 petal-like stamens Whorl 3 petal-like stamens Whorl 4 leaf-like carpels ABC triple mutant (apetalaZ pisti/lata agamous) ‘y— Whorl 1 leaf-like - 3 carpels e \~:\ Whorl 2 leaf»like “ carpels Whorl 3 leaf-like carpels Whorl 4 leaf-like carpels