Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
A white pixel represents a dissimilarity value of 1 between a pair of sub types, whilst dark blue (see pixels on the diagonal) gives a value of zero. The grey coloured bar shows the groupings if the dendrogram is cut at 4 groups.
