Illustrations. Here's some preliminary work for a model of Mendel's experiments with pea plants, which will illustrate the distribution of dominant and recessive traits in the species he studied.
Having painted these four, I've scanned them into photoshop, and can now manipulate them to look like a few different ones, adjusting the colors and flipping them. That won't fool anyone who's looking for it, but at a glance it will take away the cut-and-paste feeling that so often happens on charts like this.
Soon I'll add grid lines, arrows, and text; then three tiers of background color to more clearly identify the three different generations. Then fact-checking.
After it's complete, I'll follow up with a series of four illustrations showing the projected progeny for four horse pairs with a variety of coat colors. Nothing better than having an excuse to paint lots of baby horses! But for now, peas it is.