Haiti Is Settled by Peoples of Both African and European

Multiple Choice

Haiti is settled by peoples of both African and European ancestry.A young couple,both with mixed ancestry,marry and have several children.The children,who all have equal exposure to sunlight,vary widely in the amount of skin melanin.One child is lighter than both parents,and one is darker.The simple explanation for this is

A) epistasis.
B) multiple alleles are available for the one chromosomal locus that governs skin color.
C) the environment influenced the phenotypes of the children.
D) polygenic inheritance.
E) gene linkage.