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Re: [IGSROBIN] Genetics

In breeding experiments I am aware of, the presence of bright red pigment is
dominant over its absence.  In other words (and somewhat simplifying from
the real world), in a cross between a homozygous (both components of the
gene the same) red and a homozygous white plant, the offspring will be in
the ratio of three red to one white.

There are actually numerous genes that modify the flower color in zonals --
hence the incredible variety of shades and tints achievable by careful

Barry Roth

-----Original Message-----
From: Diana Pederson [mailto:hermine@ENDANGEREDSPECIES.COM]
Sent: Friday, July 16, 1999 3:25 PM
Subject: [IGSROBIN] Genetics


I have the first flower on some zonals I grew from my own seed.  It came
out bright red.  Is this the "default" color genetically?

Diana Pederson
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