Figure 1.
Hyper-ellipsoids Capturing Most of the Genetic Variation within Each Self-Identified Background Group
To illustrate the definition of genetic-analysis groups, here we use only PCs 1–3, although the full definition used PCs 1–5. These PCs are from PCA of all individuals except those with high East Asian ancestry. 3D hyper-ellipsoids, containing the highest density of points (defined by MCD), are shown for self-identified Mexican, Central American, and Puerto Rican background groups (Cuban, Dominican, and South American background groups are omitted for visual clarity).