Low heritability of genius?

[maxirage]

I remember a short while back that if both parents had the genius trait, passing it on to the children was moderately common. But now when I try it the chances of success are horrendous. First game I had 5 kids, none of which had any heritable traits. Second one, 1 child out of 5 had genius, the rest having nothing. Was there a nerf to the old genius breeding strategy?

 

[GreatSlayer]

I don't think the hereditary chance have been modified since release. Mind you, it's so hard to determine the factors that play into it too. Parental and grandparental inheritance do come into the equation if I remember it correctly, so you'd have to compare scenarios from before where all these factors were the same. I've not seen any noticeable difference at all, just that it becomes more and more common as my grandparents, and in some cases even great-grandparents were genius or not. Next in line, I could have maybe 1 out of 5 children, the other line 1 out of 7, becoming genius, and sometimes all my children got it. It all depends on the gene-dice.

 

[unmerged(608717)]

I have had the parents passing on the genius for 4 generations now to at least 50% success to their children. I am playing elective so I always choose the smartest of them as heir and get the genius wife outside of the dynasty for minimum chance of inbreed of course.

 

[generalolaf]

There is variability between games, I'm guessing you had unusually bad luck. In my current game, I'm running primo and so my heir (son of a Quick/normal couple) is the only child without the Quick trait out of some 8 kids except for one (who has, for some inexplicable reason, is Strong). These things happen

 

[unmerged(424234)]

If anything, after 1.07 or somewhere near, thechance was boosted tremendously. You just had a streak of bad luck.

 

[Darkgamma]

I don't think the hereditary chance have been modified since release. Mind you, it's so hard to determine the factors that play into it too. Parental and grandparental inheritance do come into the equation if I remember it correctly, so you'd have to compare scenarios from before where all these factors were the same. I've not seen any noticeable difference at all, just that it becomes more and more common as my grandparents, and in some cases even great-grandparents were genius or not. Next in line, I could have maybe 1 out of 5 children, the other line 1 out of 7, becoming genius, and sometimes all my children got it. It all depends on the gene-dice.

Anyone except the parents doesn't matter.
The chance is 25% per child for one genius parent, 37,5% per child for two.

 

[unmerged(424234)]

How did you arrive at 37.5%? The way I see it, the chance should be 43.75%.

 

[Darkgamma]

I have absolutely no idea how you managed 43,75% (and I believe I've made a mistake myself, btw)

 

[unmerged(424234)]

The chance that first parent does not pass his trait is 0.75.
The chance that other parent does not pass his trait is 0.75.

The chance that they both don't is 0.75*0.75, which is 0.5625.
The chance that something else happens (that is, either one of them passes, or both) is 1-0.5625 , which is 0.4375, or 43,75%.

How did you arrive at 37.5% and what was the mistake?

 

[Darkgamma]

I have absolutely no idea since I'm really trying to sober up >___>

 

[Mutineer]

don't if bouth pass trait you get retarded child? I personally think that how it is work,

 

[unmerged(424234)]

Mutineer: This can be easily tested by setting the probability of genius passing to 100%.

If the game does indeed work this way (I doubt - I've seen kids born with both genius and fair, form parents who each had one trait), the chance would be 0.75*0.25+0.25*0.75, which is 37.5%.

 

[maxirage]

don't if bouth pass trait you get retarded child? I personally think that how it is work,

Before I found that kinds of traits, like cleft lip and hunchback, arise more often if both parents have any heritable trait (like genius). Though it didn't seem to apply is my recent games that much.

Also, doesn't this frequency alteration mean there's something more complex going on than just a flat percent chance of inheriting the parent's traits?

 

[unmerged(424234)]

maxirage: before the patch that changed hereditary trait system (1.07 I think it was), if one parent had trait and the other did not, the chances were the same as if both had none.

 

[GreatSlayer]

Anyone except the parents doesn't matter.

For sure? Must be the gene dice giving me that impression then. @_@

 

[barny]

It still works fine in my opinion. As an Islamic ruler I marry 4 genius women and kill every son, that isn't a genius.

 

[Revshawn]

The chance that first parent does not pass his trait is 0.75.
The chance that other parent does not pass his trait is 0.75.

The chance that they both don't is 0.75*0.75, which is 0.5625.
The chance that something else happens (that is, either one of them passes, or both) is 1-0.5625 , which is 0.4375, or 43,75%.

How did you arrive at 37.5% and what was the mistake?

That much is simple. He supposes that each parent gives a 25% chance to pass the genius trait. Through some miracle of the mind, he thought that .25 * .25 = 37.5% for it to pass overall. Sound drunk logic.

 

[unmerged(424234)]

Revshawn, no, we already figured that one out. .25 * .25 does not equal .375 and he didn't think that neither. He assumed child gets genius only if exactly one parent passes the trait, not both. 0.25*0.75+0.75*0.25=0.375.

 

[Darkgamma]

Actually, Revshawn's on to it xP

 

[Pinstar]

Anyone except the parents doesn't matter.
The chance is 25% per child for one genius parent, 37,5% per child for two.

So how did my genius + non genius (No good or bad intelligence traits) couple produce an imbecile?