Re: Failure ... may lead to ... Success!
RE:>>So for me further discussion along these lines is pointless. I
am always willing to respond to serious questions
Hi Ben. This is good to hear.
Okay, so let me try again since I sent this one yesterday.
I don't know how I could be any more serious. If you knew how much
time I had been studying genetics in the past few months, facing that
steep learning curve with undaunting courage, you'd be proud since so much
of this effort is due largely to your outrageous posts and the flak that
they draw! :-) Please don't lose patience with us--just hang in there!
Everyone who is either contributing answers, or questions, is appreciated.
Heck, if we could keep Jim Dixon (alias ShayDguy) on task, we'd even appreciate
him! Unfortunately, we CAN't seem to encourage him to be serious...
Tee Hee Hee.
RE:>>3. One of my first controlled crosses was to bring pollen of a
hosta onto a green mother plant. 50 % of the offspring was yellow This
that yellow in hosta is a dominant nuclear character. If we cannot
agree on this it is
pointless to continue.
Let me see if I can understand your basic assumptions, deduce your
than later I will try to understand the conclusions you draw.
1) Any ALL green pod parent is either homozygous GG, OR heterozygous
Gw, or Gr. In addition,
2) Any ALL yellow pollen parent is either homozygous YY, OR heterozygous
Yw, or Yr.
Are these two assumptions correct? (While Jim Hawes recommends
I use better symbols, I've examined my reference texts but can't come
up with anything easier in nomenclature. I'll keep digging', Jim...)
3) The coloration in this pod parent (and extrapolated, possibly all
controlled by one set of genes at one specific locus, not multiple
genes at multiple
While I don't know that this is true, have I correctly stated this assumption?
4) The pollen parent does not bring any chloroplast DNA to the party,
so if there are
any change in the color of the leaf of the resultant F1 progeny these
are due to DNA changes in
the nucleus as a result of the cross.
1) If you cross a yellow (in appearance) pollen parent with a green
pod parent, and you get 50% of the progeny to exhibit the color of
the pollen parent,
then ANY and ALL yellow progeny are due to a dominant nuclear DNA trait
I want to make sure I understand the assumptions and your hypothesis
move on to examining the results and any conclusions drawn. Please
you will as to the accuracy of my assessment. This is my FIRST
attempt to understand
your LAST attempt to make sense out of this mess. :-)
#1 Plantsman at http://hostahaven.com
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Des Moines, IA 50311-2516