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

Question

Quizplus · Accepted Answer

Initially, three classes of genes (A, B, and C) were identified as essential for flower development in Arabidopsis. This model has been expanded to include two additional classes (D and E), making a total of five gene classes.

The Studies of Homeotic Mutations in Arabidopsis Initially Identified _____