1. The factors for the white margin in the Japanese morning glory are:
Fa,
fa Fb,
fb>
Fa and
Fb work complementally for the fomation of the white margin. Neither factor can produce the white margin by itself.
Fb,
fh-
Fh acts as a complete inhibitor.
Ff,
ff-
Ff acts as a partial inhibitor.
2.
fa links with
d (contracta) in about 1% of crossover, and
fb with
nn (Nandina) in approximately 0.5%.
3.
Ff links with
c (white flower with colored stem), the frequency of crossover being roughly 20%.
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