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/sci/ - Science & Math

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16134700 No.16134700 [Reply] [Original]

How the hell does regression to the mean work in genetics? Will an offspring's iq be the average of its parents or the midpoint parental iq z-score times narrow-scale variability?

>> No.16134902

>>16134700
You can't predict a child's intelligence just from parent's genetic code, midwit. There are too many confounding variables.

>> No.16134926

>>16134700
Traits are partially genetic, partially environmental
If you select for a trait to breed, the offspring won't have the same environment, but they will have the genetic component of the trait.
So breeding is possible, it's just not as effective as "average of parents"

>> No.16134931

Two dumb parents' kid will be more intelligent on average. Two smart parents' kid will be more dumb on average. This is regression to the mean.

>> No.16135553

>>16134700
so, a trait like intelligence is partly genetic and partly hundreds of other factors that we say are random since they may be too hard to predict.

parents that are intelligence in the first place probably have these random factors working very positively for them. Their children will inherit the genetic factor but not the random factor, and so they will likely not have this random factor as high as their parents and will on average not be as intelligent