But, quite a different story is shown by looking at the scores of the three major subgroups composing almost all of the tested students. (jackjenningsdc.com)
The haplogroup includes two major subgroups (or clades): the Original Arabian lineage from the Arabian Peninsula and the Turkoman horse lineage from the steppes of Central Asia. (sciencedaily.com)
The team's genetic information came from analyses of two particular genes from 230 species representing all major subgroups of modern birds. (sciencemag.org)