Genetics and Skintones...

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95mmaa
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Genetics and Skintones...

Post by 95mmaa » March 30th, 2019, 10:16 pm

Hi!

I just have a question regarding skin tone genetics. How do genetics work in the game in the case of skin tones? Can they skip a generation like hair color and eyes?

I just had a baby with a darker skintone than both parents, though he does have grandparents and ancestors with a similar skin tone. It's the first time I've seen this happen in the game so am just wondering if this is normal or a fluke or is the game glitching on me or something...? Normally, you'd think that the skin tone would fall somewhere in between the parents' range. I am aware there's a slight random chance of mutation or something of that sort... Any info would be appreciated. (I do have MC and SP installed.)
Thanks!

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Genetics and Skintones...

Post by igazor » March 31st, 2019, 12:15 am

I don't know the complete answer to this offhand. But with SP's Advanced Genetics in play (SP Population module), the grandparents' genetics can indeed be used if the grandparents exist in the world at the time a baby is born. I see this a lot with very distinctive features and with occult states when neither parent has the state the baby is born with but their parents do/did. It's actually a setting for the chance of that happening under SP > General Options > Options: Pregnancy (again, if Advanced Genetics is on).

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Genetics and Skintones...

Post by sittingbear » March 31st, 2019, 9:07 am

I've seen this happen before with and without Nraas SP. So it's totally possible.

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Genetics and Skintones...

Post by 95mmaa » March 31st, 2019, 11:36 am

Cool! I'll keep it as it is then. Thanks everyone! :yes:
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Genetics and Skintones...

Post by deedee_828 » April 3rd, 2019, 6:52 pm

And as long as something keeps getting passed on it can go on for quite awhile. My 7th generation of 6 kids, so far, just stopped the trend for passing on the Ursine/Frio auburn hair! But it's early in this town yet, so maybe a few more grandkids will pop up and it will continue. Or maybe someone will get it from his grandfather as two of the current parents have it.

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Genetics and Skintones...

Post by 95mmaa » April 10th, 2019, 7:44 pm

@deedee_828 - Interesting! :-o

Another thing about genetics that I'd like to ask about: so apparently there's an issue in the game where children simply take facial features from one parent randomly instead of properly/randomly blending features of both parents. This doesn't seem to be an issue when creating children in CAS. So is the 'Advanced Genetics' option in SP supposed to fix this?

I did some reading around from other threads and it seems as though I need the Extra and Populations modules for SP in order for this to work. Is there anything else I should set up? :huh:
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Genetics and Skintones...

Post by igazor » April 10th, 2019, 8:10 pm

There are no Advanced Genetics without the SP Population module. It used to require SP Extra long ago and got moved, or maybe some of the other options did, but I've been telling players to have both if they can to make sure nothing got left behind when this happened.

With the module in place and Advanced Genetics activated under SP > General Options > Options: Pregnancy, as it would be by default, the extra blending options should show up as listed below under the same Options: Pregnancy menu.
StoryProgression-Interactions#Options-Pregnancy

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Genetics and Skintones...

Post by deedee_828 » December 5th, 2020, 10:25 pm

I've a new question in regards to genetics and skin tones.

One of my sims who is on the white/black slider, pretty much in the middle so she's a very dark gray, just had a child with a sim who is on the green slider, on the light end.

When their daughter was born, her portrait panel icon was light green, similar to her father's skin tone.

But when the mother twirled and the baby was on the screen, her skin tone was peachy beige, a light human skin tone, and her portrait panel icon changed to match it!
I popped the infant into CAS and it showed her skin tone as on the white/black slider, a very light gray.

The baby's grandparents are in the household and I think I have grandparents included in the blending, but the grandmother is also on the white/black slider, on the very light side, and the grandfather has what I call human skin tone, the light peachy to dark brown, and he has very tanned skin, being about 3/4's of the way down the slider.

One of the objectives in my game is to see what different genetics you can add in each town, so I typically never change hair, eye, or skin tones, accepting whatever blend the game gives me when the child is born.

But I'm really at a loss with her first being light green, then peachy, and then CAS showing her as grey and on the white/black slider.
This was all within seconds of her being born!
I was so excited to have her be on the green slider only to be disappointed when it changed to peachy, and then totally confused when CAS showed her as gray and being on the white/black slider!

Can anyone shed any light on this issue?

I would like to keep the original skin tones that babies are born with.

Especially since this isn't the first time it's happened...I had twins born on the white/black slider a few towns ago, but their skin tones defaulted to a normal human skin tone as well soon after birth, which I left alone that time.

But I'd like to know why my game is changing their skin tones and get it to stop!!! lol

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Genetics and Skintones...

Post by indignantgirl » December 6th, 2020, 9:34 pm

I've had a few anomalies right after birth or age-up, especially discrepancies in regards to the portrait vs. the actual sim. I thought maybe the game was being finicky so I started giving it a sim hour or so to let the game "catch up". I have no idea if it really works that way, though.

Are you using default replacement skin tones, or other customs? Or other CC baby stuff? When they age to toddlers, do they keep the normal human skin tones? I ask because I use a default replacement, but I have other CC skins, including a custom freckled skin I use a LOT, and while the babies of freckled sims never show freckles, many times they get the freckled skin when aging to toddlers. Same thing with other customs. I don't know if that means their skin is defaulted as babies and then changes back to custom upon aging or what. I don't use many non-human skin tones so I don't know if that would apply here.

On the note of Advanced Genetics, I just love it! Black-haired Parker Langerak keeps marrying men with black hair but they always have one super blond kid, courtesy of one Dustin Langerak. I don't like the guy, but all of my sims have dark hair or red hair so it's nice to have a blond in the mix. :)

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Genetics and Skintones...

Post by deedee_828 » December 7th, 2020, 2:11 am

Well this is the 2nd time after a birth that I've noticed the change in skin tone.
The first time I thought it was just me and wishful thinking as I really wanted the babies to have the pale Midnight Hollow skin tone courtesy of Lucien Hyde and Odessa Winchester that they'd passed on to my heir's spouse Rory.
But when I went back and looked at all my screenshots, there was definitely a difference.

This time I was thrilled to get a Hidden Springs's greenie baby as I have co-heirs and only planned on one child for each couple.
The first couple's daughter was definitely born gray though in certain light she does look a bit greenish.

But now with your information I'm wondering if I'd have left the greenie baby peachy if she really would have changed to gray like CAS showed her?
I've never changed one of my nooboos skin tones before, preferring to accept their birth color, but with her being shown as three different skin tones within those first few minutes of birth, I felt justified in giving her the original one.

I don't think I have any cc skin tones, unless one came with a shared sim from a friend.
But I do have a few cc toddler hairstyles.
And I just got a cc crib, but I didn't put them in game until after she was born.

Yes, the combos and unexpected random hair colors can be quite surprising!
I'll see if I can share a photo of my dark skinned blonde with her greenie husband and their newborn gray daughter.

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