Because traits carried on recessive genes are masked by those of dominant genes, a person must inherit the recessive gene from both parents for the trait to manifest itself.
(traits; carried; ) (traits carried on recessive genes; are masked; by those of dominant genes) (a person; must inherit; the recessive gene; from both parents; for the trait to manifest itself)
traits traits carried on recessive genes a person
carried are masked must inherit
by those of dominant genes
the recessive gene from both parents for the trait to manifest itself