Maxis agrees with Laurenke
reggikko:
I think it's more common in the South to see people of African descent with lighter colored eyes, due to the higher level of race-mixing during slavery. Most do have brown eyes, but I've had several friends with either green or hazel. One friend's son had the most gorgeous crystal blue eyes I've ever seen.
For those of you who like the dark hair, dark eyes, dark skin combo, firefighter Dorian Miguel in Strangtown fits the bill. He's very easy on the eyes. ;) I had him marry a Sim with alien skin-tone. All three of their children have her skin but his brown eyes. The combination is rather nice. NOTE: my aliens have custom lavender skin. The mother's eyes are grey.
syberspunk:
As Posie Flump mentioned, the genetics for eye color is a bit more complex than simple mendelian genetics. Here is a sample of info which I found here:
Quote
At one time scientists thought that a single gene pair, in a dominant/recessive inheritance pattern, controlled human eye color. The allele for brown eyes was considered dominant over the allele for blue eyes. The genetic basis for eye color is actually far more complex. At the present, three gene pairs controlling human eye color are known. Two of the gene pairs occur on chromosome pair 15 and one occurs on chromosome pair 19. The bey 2 gene, on chromosome 15, has a brown and a blue allele. A second gene, located on chromosome 19 (the gey gene) has a blue and a green allele. A third gene, bey 1, located on chromosome 15, is a central brown eye color gene.
Geneticists have designed a model using the bey 2 and gey gene pairs that explains the inheritance of blue, green and brown eyes. In this model the bey 2 gene has a brown and a blue allele. The brown allele is always dominant over the blue allele so even if a person is heterozygous (one brown and one blue allele) for the bey 2 gene on chromosome 15 the brown allele will be expressed. The gey gene also has two alleles, one green and one blue. The green allele is dominant to the blue allele on either chromosome but is recessive to the brown allele on chromosome 15. This means that there is a dominance order among the two gene pairs. If a person has a brown allele on chromosome 15 and all other alleles are blue or green the person will have brown eyes. If there is a green allele on chromosome 19 and the rest of the alleles are blue, eye color will be green. Blue eyes will occur only if all four alleles are for blue eyes. This model explains the inheritance of blue, brown and green eyes but cannot account for gray, hazel or multiple shades of brown, blue, green and gray eyes. It cannot explain how two blue-eyed parents can produce a brown-eyed child or how eye color can change over time. This suggests that there are other genes, yet to be discovered, that determine eye color or that modify the expression of the known eye color genes.
Obviously real life genetics is far more complex than whatever spaghetti-coded engine the game uses to determine sims genetics. :P
I also wanted to note that just because a trait is dominant does not necessarily and explicitly mean that it is the most commonly expressed. The age old example is polydactyly, the autosomal dominant trait of having an extra digit (finger or toe). Although this trait is dominant genetically, it is not commonly seen phenotypically (expressed visually). In other words, dominance does not necessarily translate into high frequency. There are several examples of traits that are dominant, but just not found in the general population. The association and confusion probably arises due to semantics since the word "dominant" has a connotation that seems to imply that the population should have an abundance of this trait.
To put it simply, a dominant trait, in a simple case of mendelian genetics, is the trait that will ALWAYS be expressed over the recessive trait. In a simple example, you have two allelles for a certain gene, one from your father and one from your mother. Either of these traits can be dominant or recessive. In most cases, it requires two recessive alleles in order for that trait to expressed. Dominance dictates what trait is expressed, it does not necessarily affect how frequent this trait is expressed in the population. This is when natural selection comes into play. Theoretically, if the trait is adaptively advantageous, then supposedly it would be more commonly expressed in the population, since it may supposed help in the survival of its carriers, who could then go on to produce offspring and pass along the advantageous adaptation.In some cases, certain diseases or deformities are dominant. However, because the expression of these conditions are deterimental or even fatal, these traits tend to not get passed on to further generations, and therefore that is why they are not as commonly expressed in the general population.
Here endeth the mini lesson on simple genetics. [/geek]
Hehe, I hope that made sense and I hope I didn't pass on too much misinformation. Feel free to correct me as I often talk out of my ass anyways. :P Plus, in the ever changing, ever growing field of biology and genetics, something new is always springing up and changing the way we think and understand how things work. :D
Ste
Darkstormyeve:
Quote from: gali on 2005 August 03, 03:42:51
Quote from: Darkstormyeve on 2005 August 03, 02:44:53
There is genetic hierachy for sure in the game. Brown hair is dominant over blonde.
Lol, I know that, I studied in college too - but it's not pure, and besides - it doesn't matter; what matters is - is the sim ugly or not.
I accept the "racist" argument about Maxis (prefers blue eyes for dark skinned sims), and I quite like it; not because I am "racist" (I am Jewish, lol), but because the blue eyes and the blond hair make the dark-skinned sims to look prettier, even if it contradicts the genetics...:).
But isn't it amazing too that we all seem to agree that dark skin, blue eyes and blond hair looks attractive. How many shows have you seen on Discovery channel that search the reasoning behind human attraction to each other? What do we consider attractive? I have heard that its symentry of the face but alas, it seems to be other things too.
ZephyrZodiac:
I think the liking for dark skin with blond hair and blue eyes is partly due to the western desire for suntans - the deeper the tan, the healthier we think we look!
Interestingly, from what I understand from Syberspunk's post, since genetic inheritance is partly determined by external factors of what is beneficial to the community then, if the increasing global warming causes more and more cloud over Northern Europe (as it seems to be doing!) we can expect an increase in light -coloured eyes, which let in more daylight.
Another interesting point, although the general pattern in Asia is for brown eyes, there are quite a number of people in Pakistan, mainly, I believe, Kashmiris, who have blue, grey, green or hazel eyes. When I was teaching, we had a family of three Pakistani boys in the school, and all three of them had dark violet-blue eyes. Some people blame this on Alexander the Great and his army, as I believe the same thing applies in Turkey and most other countries which were on his route! Not sure I do, though.
cwieberdink:
Quote from: reggikko on 2005 August 03, 04:40:18
For those of you who like the dark hair, dark eyes, dark skin combo, firefighter Dorian Miguel in Strangtown fits the bill. He's very easy on the eyes. ;) I had him marry a Sim with alien skin-tone. All three of their children have her skin but his brown eyes. The combination is rather nice. NOTE: my aliens have custom lavender skin. The mother's eyes are grey.
I don't think they're related, but the Miguels in the game seem to be particularly good looking. I have a sim married to Jason Miguel. He has blue eyes, but still. He's hot!
Chris
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