(4)12. Four independently isolated mutants of yeast all of which are unable to grow in the absence of arginine (arg-) were isolated. Each mutant was...

List the complementation groups identified by this type of experiment ?

And how many genes are defined?

(4)12. Four independently isolated mutants of yeast all of which are unable togrow in the absence of arginine (arg-) were isolated. Each mutant was crossedwith all the others. The experimental results of this experiment, using ‘+’ toindicate growth and ‘0’ to indicate no growth, are given below. mutant 1 2 3 44 0 + + 03 + 0 0 2 + O 1 0