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A comment on The morality of sperm donation. Parent comment

Re:The morality of sperm donation by pygy_ on Tuesday February 19, 2013 @05:12AM (#5243550)
That's the point of twin studies: comparing genetically identical subjects who grew up in different environments.

The prenatal influence cannot, practically, be investigated at this point in history.

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Re:The morality of sperm donation by Daniel_Newby on Tuesday February 19, 2013 @06:55AM (#5243821)
The prenatal influence has been directly tested. They compare pairs of non-identical siblings, some who are twins and some who are not. The same pregnancy pairs are about as similar to each other as the other pairs. So the prenatal environment either has little effect, or it has a significant but highly nonlinear effect. (Once again, this assumes no extreme hardship.)
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Re:The morality of sperm donation by pygy_ on Tuesday February 19, 2013 @08:01AM (#5244003)
Interesting, thanks.
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