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View Diary: I Am Not Genetically Modified - To All Icecream Lovers (34 comments)

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  •  It's Off Topic, But Anyway (1+ / 0-)
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    murrayewv

    Embryo selection by parents choosing between different embryos is not going to have a very significant difference because they probably could not change the outcome more than 2% in a generation.  Why? because it would start with hundreds of random variables, and in one try hope to get a significantly more favorable outcome.  

    To get a significant increase, you need an actual eugenics program over many generations.

    Put it this way - take two mutts and try to make a Rottweiler or a greyhound. Not. Gonna. Happen.

    Take a thousand mutts and breed selectively for 15 generations you'll get what you are after.  And you don't even need statistics or molecular biology to get there.

    Men are so necessarily mad, that not to be mad would amount to another form of madness. -Pascal

    by bernardpliers on Sun Aug 25, 2013 at 11:44:00 AM PDT

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    •  embryo selection is expensive.... (2+ / 0-)

      you would need to harvest the fertilezed eggs, pull off a cell, grow up some more cells, purify the DNA, amplify it for a bunch of genes and then do the computer analysis of the results.  Even though prices are falling, this not be cheap.  And what would you select- a tall kid or a smart kid?  Tall people make more money but tend to have shorter lives, so don't assume smart is all that matters.

      I guess if you can hire a surrogate you can afford to sort through your embryos and make the choices you want- but the whole thing strikes me as futile, since there are mutations that you would never screen for that would put a spoke in your wheel.  

      You shall know the truth, and the truth shall make you mad. Aldous Huxley

      by murrayewv on Sun Aug 25, 2013 at 11:54:25 AM PDT

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      •  Most Cost Effective: Have Sex With A Smart Person (0+ / 0-)

        That would be way more effective than embryo screening.

        Men are so necessarily mad, that not to be mad would amount to another form of madness. -Pascal

        by bernardpliers on Sun Aug 25, 2013 at 12:09:11 PM PDT

        [ Parent ]

      •  It's true that there might be tough choices (0+ / 0-)

        ....to make when selecting embryos. You would only get a limited number. Maybe ten? Still, let's assume we knew about nothing except IQ. So you could reliably increase IQ five points. I think people--especially wealthy people--would pay for that. But you're absolutely right to say there would be a cost-benefit trade-off.

        Let's humor me here and say this becomes available in ten years. Is that a good thing? Should we allow it?

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