The Studies of Homeotic Mutations in Arabidopsis Initially Identified _____

Multiple Choice

The studies of homeotic mutations in Arabidopsis initially identified _____ classes of genes essential to normal flower development, but this model has recently been expanded to ____ gene classes.

A) 2; 3
B) 2; 4
C) 3; 4
D) 3; 5
E) 3; 6