We need a better genetics system!!!!

I’m not too aware of how the gene pool is coded, but I’ve both heard and seen that it’s pretty basic. It really bums me out that I only see the same mixes over and over again… 

It’d be amazing if things like dominant + recessive genes would appear in the Sims 4, or at least a smaller chance to get creeping genetics from grandparents rather than a child being a simple mix between two parents! 😩 Cross-referencing the parents’ etc genes to make sure the new generation are properly inheriting instead of gaining the most random features, yada yada (I haven’t yet tested this part since November’s fix so pardon me if this already works well). 

More hair and eye colours would be great, too; both natural and unnatural. More separate colours as well as colour variants (pinky red vs orange-y red, orange-y brown vs bold ginger etc). Maybe even an advanced custom section that lets you specify whether a sim’s hair colour is natural or dyed, for example. Or an option that lets you select differently shaped iris’. Especially with all of the supernatural related packs we have now!

I believe this would make story-based and generation-focussed gameplay a lot more exciting, I personally LOVE seeing what kind of features each of my sims’ offspring inherit. Of course, it’d also be a little more realistic. 

I’m in the same boat. I absolutely adore seeing how the kids grow up to look like, but they all seem to have the same main features and oftentimes their facial structure’s doing their own thing. I’m tired of seeing the same two hair and eye colours! I made a post like this with some suggestions, I really hope more people will come around and speak up. 🙏🏻

(I think someone moved my post here to prevent dupe posts??)

So in the Sims 4 currently the way physical genetics work is they’re just directly from the parents, no ancestors’ genetics just the parents which I find a bit disappointing coming from someone who enjoys playing legacies. I would love to see physical genetics passed down from ancestors or even just from grandparents or great-grandparents would be enough. The chance for a child sim to end up looking like their grandparents or just inheriting their eyes or hair colours would be a nice change.

I’m not personally worried about the idea of adding recessive genes because of what the Sims 2 has demonstrated. In the Sims 2, from what I’ve heard so feel free to correct me, having recessive genes in game can actually make certain hair and eye colours disappear in the town after a few generations, over run by brunettes and black haired sims. So I don’t think recessive genes could work if you want the sims in town to look as unique as possible.

Does anyone have anything to add on the idea of a genetics update? 

I play with a mermaid legacy and all of them have inherited their ancestors looks but only on their merform, they're non occult form has the inherited looks from their parents but not their grandparents or ancestor founder sims. My current sim who is gen 27 has my founder sims facial features in her merform, but looks just like her mum in her normal everyday form as she's a science baby from just her mum and doesn't have any father genes in her, but her five kids all from different dads all have inherited both their parents looks in their normal form but their merforms all have their ancestors looks from only their mums lineage. I'm not sure how the game works for non merfolk as I only play them but I do find this whole genetics system confusing especially if the sim has two different forms. I do like it though 😁

My current sim, non occult form has her mums genetics

Her merform inherited my legacy founder sims nose, eyes, cheeks and neckline and skin shade 26 gens later.