What is the phenotype of the sons in generation iii? how do you know?

The phenotype of children in the third generation depends on the dominant or recessive characteristics present in the alleles of grandparents and parents. To know the phenotypes you must understand Mendel's laws.Knowing the alleles of parents (generation II) and grandparents (generation I) through crosses, you can know what characteristics the children will have in the third generation.

answer; ///the above statement is (true);