Serum esterase genetics in rabbits. III. A third allele on the Est-2 locus.

A fast-migrating F' zone of the prealbumin serum esterase system of rabbits is demonstrated in low frequency in the breed Vienna White (stock Cpb:VW). Evidence is given that this zone is controlled by a third allele of the Est-2 locus. The zymotypic expression of this allele (Est-2-F') shows codominance in combination with the Est-2-F allele and complete dominance in combination with the Est-2-F' allele. In contradistinction to the F zones of the Est-2-F allele, the F' zone possesses no atropinesterase activity.