to determine whether traits can be inherited independently
Explanation:
the use of dihybrid crosses allowed him to discover the law of independent assortment / discovering that each locus had 2 alleles which segregate during the creation of gametes.
So it can be used when having you know what with 2 other ppl a male and a female
It seems that you have missed the given options for this question, but anyway here is the correct answer. The name of the process in which genes are identified by transforming mutant cells and screening for restoration of wild-type function is called CLONING BY COMPLEMENTATION. Hope this answer helps. Thanks for posting.