Neat homework idea: students create pedigree of one or two traits within their family. (only one gene needed for trait to be expressed = dominant. Both parents must contribute the gene for a recessive trait to be expressed)
The real reason why you are intellectually inferior & hideous. It's all in your genetic make-up! Sorry but Disney doesn't promote logic which is why you like it so much, genetically speaking, you are programmed that way. Sucks to be dumb.