I wasn't sure where to put this, but I figured since this was the genetics section, it might be a good place.
I just did the "string test" on my 6 month old colt. The one where you measure mid-knee to coronet band. He measured 16.2!
Now the interesting thing is, his mom is a Foxtrotter and she measures 15.1 (a friend with an actual measuring stick measured her for me, so I know that's pretty accurate). When I did the string test on her, she came out 15.2. I also measured my Mustang, whom measures 14.3, and according to the string test is just under 15 hands.
So, if I am measuring just a little on the large side, my foal should still mature to around 16.1 according to the string test.
I've met his sire, a QH, and while I don't know exactly how tall he is, he is pretty average and not very tall. I'm guessing he's also around 15.1.
So would it be unusual for my colt to come out 16.1 when both his parents are around 15.1, (a Quarter Horse and a Foxtrotter)? I know the string test thing may not be 100% accurate, and my measurements may not be 100% accurate, but any way I look at it, the colt's cannon bone is a good inch longer than his moms. So does that sound about right?
It would be cool to have a big horse for a change.