Men whose NGS data have been fully analyzed are indicated with a grey background color. Red is used for men whose data has not yet been fully analyzed. His position on the tree is not yet final, and will in general be downstream of the current position. He may not be positive for all the SNPs/INDELs in the block he descends from.
A green SNP name with a '?' indicates that the SNP's status for the block is uncertain, but assumed to be positive. The same SNP probably occurs in an upstream block. It will be necessary to check BAM files or perhaps Sanger sequence some men to prove the result.