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The polymorphism of the histone H3 gene in Dreissena polymorpha (Pallas, 1771) and D. rostriformis bugensis (Andrusov, 1897) were found for the first time. Our analysis reveals that histone H3 sequence polymorphism is widespread across native and invasive populations. Notably, the sequence variability of histone H3 is significantly higher in D. polymorpha than in D. r. bugensis. Possibly, that observed histone H3 and rRNA polymorphism may play an important role in regulating cellular processes, adapting to environmental conditions, and maintaining genomic stability that contributes to the invasive success of D. polymorpha. However, this question requires additional research.
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Travina et al. (2026) studied this question.
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