It's all about that base -- It's not what you've got, it's what you do with it that counts -- Taking out the garbage -- A bit of dogma -- Throwing the switch -- The secret's in the blend -- Cats with thumbs -- Fish with hips -- Mice and men and mole rats, oh my! -- Party town -- Pimp my genome -- Cut and paste -- Nature's red pen -- Ever-increasing circles -- Silence of the genes -- Night of the living dead -- On the hop -- Opening a can of wobbly worms -- Everyone's a little bit mutant -- Opening the black box -- Blame the parents -- Meet the Mickey Mouse mice -- In search of the 21st-century gene.