Human skin, hair, and eye color are also polygenic traits because they are influenced by more than one allele at 
(Human skin, hair, and eye color; are also; polygenic traits; because they are influenced by more than one allele) (they; are influenced; by more than one allele)
Human skin, hair, and eye color they
are also are influenced
polygenic traits because they are influenced by more than one allele
by more than one allele