Wheaton Relationship of Groups A-D
This chart shows the Haplogroup R1b1a mother of each of the Wheaton A-D subgroups. The Origins and approximate date each of the mutation (such as in M269) are shown. This is a visual to help explain that back 7,500 years ago we share a common ancestor. The groups split about 3,000 years ago into Groups A, B & D on one side and C on the other. Each time a mutation happens all the men descended from the man with that mutation will pass it to their sons. We all split from Haplogroup I1b (Group E) much further back in time. The Walk Through the Y is designed to identify further mutations and eventually connect to a genealogical time frame.
Wheaton Wood 
This format makes it so much easier to understand, Great idea