Re: status update 28Jan04
- To: "Space Age Robin" S*@yahoogroups.com
- Subject: [SpaceAgeRobin] Re: status update 28Jan04
- From: "Neil A Mogensen" n*@charter.net
- Date: Wed, 28 Jan 2004 20:50:55 -0500
Pierre, I think your points are especially well
taken.
The issues of gamete competition and non-viability
certainly can and will distort any possible Punnett array, possibly making the
one that does apply to the genetic data difficult if not impossible to
identify.
One thing gives me hope. In the
communications received from the Suttons, it is noted that the disturbances of
flower form, for example, that were the hallmark of early SA X SA crosses and
made the type cross almost a waste of time, no longer seems to be true, or at
least, *as* true as it once was.
Successive generations and selection of the more
regular performing seedlings and selection away from those prone to disturbed
behavior seems to have had an effect. I would surmise that recessives
associated with the SA traits have slowly been left behind. You are
correct in the statement that such recessives can ride along generation after
generation since only one "normal" gene of the four possible for many
traits may be sufficient for viabilitity in the plant. It does
appear, however, that many of the negative traits have indeed been left behind
or greatly reduced in prominance in Space Age behavior.
Since those very traits we seek to understand are
very basic in flower form we are presumably dealing with conditions that affect
the differentiation of meristematic tissues into functional parts. I would
expect the genetics of such traits to be far more difficult to identify or pin
down than simple pigment formation, for example.
Disturbances of the differentiation process
sufficient to produce Space Age traits may well have other consequences in the
plant's physiology, some of which may indeed be lethal. Due to the
distortion of inheritance patterns we may expect if this be true, we will need
particularly astute geneticists and plant physiologists to help interpret the
data. Fortunately such people do exist within the fold of the
Society. I have some confidence their aid can be enlisted.
Thank you for your continuing helpful
comments. Please don't stop!
Neil Mogensen z 7 western
NC
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