Sometimes Heredity is Just Plain Quirky!

Have you ever been to the doctor or the dentist and had him mention something unusual about you? I don't mean that the doc was making fun of your anatomy. On second thought, I guess that is sort of what I mean. Specifically I mean that something about your person is different from that of the general population

I had that happen several years ago when I went to the dentist to have my wisdom teeth removed. That's when I discovered that I wasn't having teeth extracted.  I was having a tooth pulled. Specifically, the upper left one. Because that's all I had, that's why!  (I know this wisdom tooth deficiency explains so much about me to some of you.) :)

This one-wisdom-tooth discovery intrigued me on so many levels!

• As a foodie person I was thrilled that few meals would be missed! (Just eat on the other side!)
• As the home economist I was glad to pay for only one extraction!
• As a home-schooling mom I was interested in setting up a Punnett square to see if this was a family trait passed down to my kids.
• As a hobby genealogist I was interested in determining if this was something that I'd inherited from my ancestors or if I was actually the DNA mutant. (I don't think I like the sound of that!)

It turns out that I am not the mutant!!!! My mom only had the two upper wisdom teeth and so did her mom! We don't have any knowledge of generations before Grandma.

But I only had 1 upper tooth, not the deviant 2. Only time would tell if this would be the trait passed on through my DNA. Then a few years ago the orthodontist told us that The Bear only had buds for 2 wisdom teeth (not 4, but not 1 like me either). So I did pass on the "only the uppers" trait and The Bear might be the only one of my four children to inherit this recessive gene. (I'm not sure now but I can find out easily enough. Well, girls?) This means that for some reason (probably a childhood illness) the tooth bud for my upper right wisdom tooth did not develop but that it did not cause a further DNA mutation either.

Just this week a cousin's child said that she is cutting a wisdom tooth. She's in her mid-20's, which is also about the time I got mine. (Late tooth eruptions is another one of those tooth oddities I inherited. My parents considered dentures for me as I neared my first birthday without chompers. Just kidding.)

Anyway, being curious I asked my first cousin once removed (for all of you who need schooling in generation labeling) about the number of her wisdom teeth. She only has the uppers! Since her grandma was my mom's sister she inherited this recessive mutation from my maternal grandma (which would be her great grandma), too! Now I'm so curious that I wish I could determine which of my grandma's siblings had it (she had 2 sisters and 1 brother) and which of the next generation has/had it (there were 10 children in the next generation) and so on down through the generations.

So while the rest of the homeschooling families are doing Punnett squares for peas and fruit flies, or human heredity like the ability to roll the tongue (I can't), taste the bitter strips (I can), blood types (I'm O+) and ear attachment (mine aren't, I don't think) I'm more interested in diagramming our family's tooth genetics because that's a study I could really sink my teeth into!  (Sorry, I just couldn't resist a parting pun concerning Punnett squares.)    :)