Claim · model-written summary
The crossover percentage between a and k may be 33, 33.
Verbatim
e0“The cross-over percentage 33, 33 may take place between a factor (a) for this character and a factor (k) for “Tombo” leaf.”
t0“Morning Glories”
Title
Genetic Studies of Leaf-Characters in Morning Glories VII
TOKIO HAGIWARA Shokubutsugaku Zasshi 1928. doi:10.15281/jplantres1887.42.85
Other claims from this paper (8)
- Observation Spiral torsion appeared in F2 at about one to three normal individuals despite absence in F1 and parents.
- Observation F3 progeny confirmed recessive Mendelian inheritance of the torsion trait.
- Mechanism Full torsion development appears to require both tw and p in the same zygote.
- Observation Estimated crossover frequency between tw and p was 25.
- Observation Some plants bore an apical flower on a leafy flower branch and had enlarged abnormal bracts.
- Mechanism The abnormal bract characters were attributed to a recessive factor.
- Observation Normal-bract hybrids segregated normal and abnormal offspring 3:1 in F2.
- Observation Some F3 and F2 crosses had a low abnormal-bract segregation ratio.