Amino acid replacement: R374H. Nucleotide substitution: CGT to CAT. R374 lies behind the first zinc finger domain in the C box.
G8693034A
G?A
R374H | hb-PA; R374H | hb-PB
R374H
Homozygotes display duplication of abdominal segment 1 at the cuticle level.
Homozygotes have a prothorax and 9 abdominal segments.
Class V allele.
Phenotypic class Va hb allele.