I've been thinking about the genetics for my mersims, and I've decided that the one that carries to term the nooboos will determine the occult/non-occult trait while the one that doesn't carry the children will determine tail color.
An exception to the rule will be elementals.
Water and Air Elementals will always be merfolk with any type of tail color, usually something that reflects their element.
Fire Elementals will always be spellcasters.
Light Earth Elementals will be merfolk until fairies get added to the game.
Dark Earth Elementals will always be Vampires. Dark doesn't equal evil. I'm thinking of a sun and moon theme.
