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Updated: Jun 13, 2026

Establishment and Maintenance of Gnotobiotic American Cockroaches (Periplaneta americana)
Published on: May 28, 2021
Chromosome stability and gene loss in cockroach endosymbionts
Zakee L Sabree1, Patrick H Degnan, Nancy A Moran
1Center for Insect Science, University of Arizona, Tucson, Arizona 85721, USA.
Abstract:
Insect endosymbiont genomes reflect massive gene loss. Two Blattabacterium genomes display colinearity and similar gene contents, despite high orthologous gene divergence, reflecting over 140 million years of independent evolution in separate cockroach lineages. We speculate that distant homologs may replace the functions of some eliminated genes through broadened substrate specificity.
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