I seem to remember that this discussion started with a "what if " a seed lot was comtiminated at (x)%, "what would" the (y)% outcome be in
the seed if the lot was planted?
From what I remember of my college genetics class, I believe Dale successfully answered the question. I also seem to recall that the Embryo
is what is responsible for making the new plant and that the endosperm is responsible for support of the new embryo/embronic plant until it
can support itself.
Dale Wilson wrote:
Joe,
...the paper below used genetics
to show that grain filling mutations can vary number of endosperm
cells relative to embryo...
This statement and the rest of your post (and the last several) are
totally beside the point. This whole thread arose from a question
about expected transgenic contamination in grain arising from
accidental contamination of the sown seed, with a low frequency of
transgenic seeds.
My points have been:
1) Fraction of kernels in the grain crop that are transgenic is
predictable based on the frequency of the transgene in the population.
The gene frequency is not going to change much in the absence of
selection (unless of course pollen from another field blows in).
2) The amount of transgenic material *by weight* is roughly
proportional to the fraction of kernels (by number) that are
transgenic.
Answer:As I pointed out above your figures do not seem to agree with
findings published in journals.
You have not discussed ANY relevant papers. All the relevant papers
relating to point (1) above are more than 50 years old. This is
well-established text-book genetics.
Point (2) is common sense, pure and simple.
I think we should stop this thread. I doubt anyone is interested in
it. And it seems to me you either have some ineradicable mental block
about this or perhaps are obfuscating. I am mystified by your
arguments.
Sincerely,
Dale
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Byron Simonds
E-Mail :Byron_Simonds@ncsu.edu
Phone : (252) 358-7822
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