Re: Re: HYB: TB: question - making wider falls/hafts
- Subject: Re: [iris-talk] Re: HYB: TB: question - making wider falls/hafts
- From: G* S*
- Date: Mon, 05 Mar 2001 19:37:30 -0800
Patrick Orr wrote:
>
> I have been told that when crossing something with a plicata, many (not all)
> of the offspring will have the form of the plicata parent, and the color of the other parent.
Plicata vs non-plic is controlled by a single gene (probable/possible
oversimplication, but close). Since plic is recessive (at least to self)
most of the above-mentioned children will be non-plic.
Width (and the other components of form) are controlled by many genes,
and so the expected result should be regression to the mean. Which means
that the average form of the children is equal to the average of the
form of the parents, but biased towards the mean/average of the genetic
possibilities, meaning narrow. The exceptions to this general rule are
the good intros.
Gerry
--
g*@mediaone.net
Gerry Snyder, AIS Symposium Chair, Region 15 RVP
Member San Fernando Valley, Southern California Iris Societies
in warm, winterless Los Angeles--USDA 9b-ish, Sunset 18-19
my work: helping generate data for: http://galileo.jpl.nasa.gov/
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