Dwarf₁ (d₁) allelomorphs

The following series of allelomorphs exist for the d₁ locus:

• d₁ as described by Emerson.
• d₁^s semi-dwarf-andromonoecious 50% height of normals.
• d₁^m approaching monoecious condition 60-65% height of normal sibs.
• D₁ normal height.

The d₁^s and d₁^m allelomorphs are dominant to d₁ and recessive to normal. The three dwarf allelomorphs have different origins:

• d₁ from Emerson, d₁^s from Brink (= Brink's d₅) and d₁^m from Beadle.