Problem
The species of angiosperm Greenus leaficus has been shown to demonstrate three different colours of leaves in the wild. There are some individuals in a population with green leaves, some with yellow leaves, and some with white leaves. Genetic analysis has revealed two genes (A and B) responsible for variations in this leaf colour.
You have isolated two plants and begun genetic analysis. One is a true breeding white leaf plant (PLANT 1). The other is a green leaf plant (PLANT 2).
I. Your first cross is to self the green leaf plant. You obtain the following results:
394 green-leaf plants
129 yellow-leaf plants
180 white-leaf plants
You decide to cross this green-leaf plant with the white-leaf plant and obtain the following offspring:
115 white-leaf plants
55 yellow-leaf plants
61 green-leaf plants
You have two other plants of interest. One is a true breeding green-leaf plant (PLANT 3) and the other is a true breeding yellow-leaf plant (PLANT 4).
II. You perform mutagenesis on the sperm and eggs from each plant. You perform the following crosses:
Mutated sperm of plant 3 X Mutated egg from plant 3
Mutated sperm of plant 4 X mutated egg from plant 4
The result is a true breeding yellow leaf plant from the first cross (PLANT 3mut) and the second is a true breeding white leaf plant (PLANT 4mut)
Finally, the complementation test between PLANT 3mut and PLANT 4mut. The result is 576 yellow-leaf plants (PLANT 5comp)
Provide the genotypes of all of the plants. Also, provide a possible metabolic pathway involving these two genes.