Three alleles were encoded at Ah2. Heterozygotes at locus Ah. 2 exhibited 2bands in ratio 1 : 1 in diploids, and 2 or 3 bands in ratio 2:1 or 1 : 1 : 1 in triploids.

• 2n组中两条酶带的相对染色强度为1:1,三倍体中两条酶带的基因剂量为2:1,在Ah_2位点上检测到3个不同的等位基因,纯合子也表现出1条酶带,杂合子在2n对照组中表现为2条酶带,基因剂量为1:1;