Chocolate: a sex-linked recessive plumage colour mutant of the domestic fowl
1996
Carefoot, W.C.
1. A mating between Black Orpington bantams produced, in addition to blacks, a single female in which the black colouration was replaced by dark chocolate. 2. A mating of the chocolate-coloured female with a black male, F2 and backcross matings demonstrated that the chocolate phenotype is caused by a recessive sex-linked gene to which I assign the symbol *CHOC. 3. A mating of 'chocolates' inter se yielded all chocolate offspring.
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