Ethnicity refers to the cultural expression ... on race is based on self-identification and is not "an attempt to define race biologically, anthropologically, or genetically." ...

Still, both race, which describes one’s physical characteristics, and ethnicity, which encompasses cultural traditions such as language and religion, play significant roles in people’s lives.

Instead, available genotyping methods will make it possible to define genetic subgroups ... must not be compromised by the use of race or ethnicity as pseudo-biological variables.

President Donald Trump has revived themes of race and ethnicity as one of his campaign talking points. Americans must now decide how to respond. Does having a unique name affect you? Did a teacher ...