"Chicklet453681;c-17750836" wrote:
"SimmerGeorge;c-17750195" wrote:
"Sallycutecat;c-17750064" wrote:
I noticed she said that Sims 2 was more realistic with black and brown hair being dominant and blonde and red being resesive, but that is not how it works in real life. I'm glad they moved away from that idea for Sims 3 and 4 and hope they never go back to it.
@Sallycutecat Wait what? I'm pretty sure black and brown hair is dominant and blonde and red is recessive in real life too...
Red hair can definitely be dominant in RL. I have 3 girls, who are all grown now, 2 of them are brunette, and my youngest is a red head. Her hair was the color of a brand new shiny copper penny when she was born and thru-out most of her life, now her hair is a little darker. She has 3 children by her ex-boyfriend who has jet black hair (he's half Mexican), and 2 of her children are red-headed! The other is ash blonde.
When my redhead was born I was freaking out because I'm blonde and my ex-husband had dark brown hair. I found out after she was born that both of my great-grandmothers on my dad's side were redheaded (they were both dead so I had never met them nor saw pics of them). And the really odd thing was that all of my cousins on that side of the family had red-headed children too, and none of the parents were redheaded!
"Sallycutecat;c-17750839" wrote:
"SimmerGeorge;c-17750195" wrote:
"Sallycutecat;c-17750064" wrote:
I noticed she said that Sims 2 was more realistic with black and brown hair being dominant and blonde and red being resesive, but that is not how it works in real life. I'm glad they moved away from that idea for Sims 3 and 4 and hope they never go back to it.
@Sallycutecat Wait what? I'm pretty sure black and brown hair is dominant and blonde and red is recessive in real life too...
No colour is dominant over another. If someone with blonde hair and someone with black hair have a child the child has equal chance of having any hair colour from black to blonde. If they inherit both blonde and black our genietic code does not select black to be dominant, instead it could be either. If the darker hair colours were dominant then by now, the human race will all have the darker hair colours.
Both of you are showing that certain traits that lend itself to the lighter colors tend to be recessive over dominant. If there was no recessive or dominance, the hair colors would be more equal in representation.
Which is why recessive traits tend to "skip" generations. Some traits that cause the lighter hair colors are recessive. Red hair being the rarest and it is recessive. Because they will hide until they're paired up with themselves (or by themselves for genes on the X and Y chromosomes).
Hair color not being determined by a single gene just complicates matters. It's why there are so many variations of hair, eye, and skin color. Because it's not just one gene for each of them. It's multiple genes for each. Per Wikipedia, there are 13 different variations across 11 genes that deal with hair color.
And that is the thing, as humans have kids with people outside of their ethnic group (aka: group with similar genetics), the recessive traits of their ethnic group will go down. But given the chances of people with the recessive traits to meet up is still high enough that there is no evidence to say that any hair color is going to go extinct in the near future.
