Variant of GDF9 gene Base change Amino acid change G1 G-A Arg (R)–His (H) G2 C-T UnchangedVal (V) G3 G-A UnchangedLeu (L) G4 G-A Glu (E)–Lys (K) G5 A-G UnchangedGlu (E) G6 G-A Val (V)–Ile (I) G7 G-A Val (V)–Met (M) G8 C-T Ser (S)–Phe (F)

Table 1: Polymorphic sequence variations in GDF9 (Hanrahan et al., 2004).