Are sweet tooth's genetic?

I will openly admit that we eat way too many sweets and treats at our house. The cupboards have such a wide variety of color and sizes to it though, so it's not all bad. Well, Kate is one of the worst. She has figured how to push the chair over to the counter, climb on the counter and get into the candy. The other day, I caught her after she had done this, found a giant chocolate bar, unwrapped it and taken a couple of bites. When I told her to give it back to mom, she crawled under the kitchen table and just laughed. Long ago, I discovered that when the kids are awake, moments of silence usually mean trouble!