Re: Genetic modification

Mike Miller (mmiller@pcsia.com)
Sat, 15 May 1999 20:30:53 -0500

I understood a "selfing" species to be one that is self pollinating. If
this is correct, then it would seem the % outcrossing would be very low to
nil and this would seem to explain why the control % of outcrossing was not
given. It is contained in the descriptor "selfing". Mike Miller

At 18:09 15-05-99 -0600, you wrote:
>
>> As a example, inserting the gene for herbicide-resistance
>> transgenically (vs. a natural mutation) changed a selfing weed
>> species Arabadopsis thaliana into a 10% outcrossing species.
>> Outcrossing - apart from enhancing the risk of weediness - has
>> nothing to do with herbicide resistance. It is a secondary,
>> unintended trait. And it was caused specifically by placement of the
>> novel gene within the chromosome because a) when it happened
>> naturally, outcrossing was not affected, and b) the % outcrossing
>> varied among transgenic lines given the same herbicide resistant
>> gene. Numerous other examples exist - this is not unique.
>
>This is one good example of the pseudo-science. How much is the outcrossing
>rate in wild Arabidopsis? (in other word, how much is the *control*?, or
>better, how much it was in that particular experiment?) This data is not
>given, then it is concluded that 10% is caused by GE.
>If normal outcrossing rate is 50%, GE are bad because reduced the rate ;-)
>If normal outcrossing rate is 0%, GE are bad because enhanced the rate
>If normal outcrossing rate is not tested or given, GE are bad because
>outcrossing was (searched and) found in GE.
>It is called CONTROL, it is what should *normally* happen, and it is
>necessary.
>
>By the way, I also know other examples like this, of course without the
>control.
>
>Maurizio Ventura
>
>
>
>"Be part of the solution,
>not the problem."
>
>
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