I have freaking excellent eyesight, and none of my parents could draw to save their lives. I've seen them both sketch something in the past, I believe, and they're... well, generic un-talented people in that regard. I have both artistic and musical talent earlier in the family tree, however, and my brothers would be good artists if they hadn't stopped drawing when they were young. I think all of that stuff skipped a generation or two, because I do well at art, as well as music and writing. I think my grandma's sister, or something, used to paint, and sell her stuff... but I'm not sure. So I do believe artistic ability runs in the family, but not everyone gets it.