例句與造句

1. Genetic variants affecting superficial anatomical features ( such as skin color )  from a genetic perspective, are essentially meaningless they involve a few hundred of the billions of nucleotides in a person's DNA . Individuals with the same morphology do not necessarily cluster with each other by lineage, and a given lineage does not include only individuals with the same trait complex.
2. It's difficult to find trait complex in a sentence. 用trait complex造句挺難的