If there are class B mutations in the flower development genes of Arabidopsis thaliana, then determine the structures present in
each whorl, beginning with the outermost whorl and ending with the inner most whorl. If a whorl does not contain the normal structure for that whorl as found in a normal flower, then choose the word "mutant". a. Whorl #1 (outermost) Answer 1Choose...stamensmutantcarpelspetalssepals
b. Whorl #2 Choose...stamens mutant carpels petals sepals
c. Whorl #3 Choose...stamens mutant carpels petals sepals
d. Whorl #4 (innermost) Choose...stamens mutant carpels petals
ABC model of flower explains the role of various genes in the formation of a flower from the shoot. Each gene forms a particular structure of a flower in the following manner:
1. A gene -sepals. (Whorl-1)
2. A + B- Petals (Whorl-2)
3. B+ C - stamens (Whorl-3)
4. C- carpels. (Whorl-4)
If a flower lacks the B gene, the effect will be observed in the phenotype in which B gene is involved that is in the formation of petals and stamens or whorl 2 and whorl 3.
