Multiple Allelomorphs in The Duck

Abstract

Prior to these investigations, the only multiple allelic series known to control colour inheritance in Anas platyrhynchos was the “restricted — mallard — dusky” group described by J{scaap} (1934). Since the present work is partly concerned with interactions between the latter series and the new “dark phase — light phase — harlequin phase” group, (both of which cause autosomal variations in the pattern of the wild Mallard), it seems appropriate to summarize J{scaap}’s observations on the “mallard” series in the same section.