The e allele is what controls the amount of black or gold/Silver shows on the adult plumage.What does e allele mean?
These are the known e allele so far(in chickens)
E for extended black its turn birds a solid black, no red or Silver(when in its homozygous state). Black Marans
ER originally called Extended black Restricted but later known as Birchen, on males they have black wing triangle, also called Crow Wing. Black Copper Marans
e+, wildtype, its what Red Junglefowls are based on. Like Brown Marans
eWh: For Wheaten. Like Wheaten Marans