Caption
The phenotype of the Bb1 allele.
Dorsal aspect.
Oriented anterior up.
After Bb: Bubble on page 71 from Lindsley and Zimm (1992).
D. L. Lindsley and G. G. Zimm. The Genome of Drosophila melanogaster. Academic Press,
San Diego, CA, 1992. ISBN 0124509908.
