My buddy Dennis sent me this crazy-ass flow chart. You can use it to see which mutant hit it with who.
You can view the "blow-uppable" version here. (Though I notice sometimes it doesn't load quite properly.)
After seeing all these crazy lines darting across the chart, I'm beginning to wonder if "cross-breeding" is the secret behind the mutant gene. And the number of lines coming out of Wolverine alone make me glad, for his sake AND the sake of his partners, that he's got a mutant healing factor.
BTW - the file is hosted over at UncannyXmen.net, which also has a very amusing write-up on "The Guthries" (who you and I more commonly recognize as "Cannonball's Family"). The author tries to get to the bottom of questions such as "Just how many brothers and sisters DOES Sam Guthrie have?", "Why does his dad have three different names", and "How does his sibbling's hair color keep changing from year to year?" A fine, well-researched read...