This mod makes hair and eye color genetics more realistic. It's based on a simplified real life model of genetics in which there are two genes of eye color (a brown/non-brown gene and a green/blue gene) and two genes of hair color (a dark/blonde gene and a non-red/red tone gene). In the game, there is one gene for eye color and one for hair color, so the mod is an approximation of an approximation [sic] of real life genetics, which is much more complicated.

New genetics rules

• Blonde hair dominates over red (but still black and brown hair are the most dominant);
• Dark blue eyes are as recessive as light blue and gray ones, while green eyes dominate over them;
• Brown eyes are still the most dominant human eyes;
• Alien eyes dominate over all (like custom eyes) and any Sim can use them. They are available in Bodyshop.

Existing Sims' appearance won't be affected.

There are also two other versions for people who use nonstandard default replacements for dark blue eyes:

• simNopke-moreRealisticGenetics-hazel makes dark blue eyes as dominant as green. Use for hazel, amber, or green DRs.
• simNopke-moreRealisticGenetics-brown makes dark blue eyes as dominant as brown. Use for brown or black DRs.

Use only one version of the mod. simNopke-moreRealisticGenetics is also a version.

Genetic values (greater means more recessive) of the genes:


Rikkulidea has written how the game genetics works, check it out if you want to know something more about it.

Conflicts

• Creature fixes by Pescado, because of alien eyes changes. Both mods work fine together as long as my mod loads after Pescado's.
• Mods changing genetics, visibility in the catalog, or "townification" of blonde hair, or alien, green, or dark blue eyes. I advise against using them with this mod. If you really want to keep those mods though, make sure they load after this mod.

Overriden resources

Resource name	Type name	Type	Group	Instance	Instance (high)
all packages
uuface_eye_alien	Texture Overlay XML	0x2C1FD8A1	0x2C17B74A	0x0C9C468E	0x00000000
uuface_eye_green	Texture Overlay XML	0x2C1FD8A1	0x2C17B74A	0xAC229306	0x00000000
Blond	Hair Tone XML	0x8C1580B5	0x2C17B74A	0x6C1AC6AB	0x00000000
simNopke-moreRealisticGenetics and simNopke-moreRealisticGenetics-hazel
uuface_eye_dkblue	Texture Overlay XML	0x2C1FD8A1	0x2C17B74A	0x4C229303	0x00000000

Credits
Ciastko
jfade (The Compressorizer!)
Voeille
Creators of SimPe