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Cis-regulatory evolution of Wnt family genes contributes to a morphological difference between silkworm species - PubMed

2 days ago
  • #cis-regulatory evolution
  • #Wnt genes
  • #morphological diversity
  • Cis-regulatory evolution of Wnt family genes contributes to morphological differences between silkworm species.
  • Interspecific crosses identify genetic basis of caudal horn size difference between Bombyx mori and Bombyx mandarina.
  • Three largest QTLs account for one-third of the mean horn length difference, with the largest on chromosome 4 encompassing a conserved Wnt gene cluster.
  • Allele-specific expression analysis and CRISPR/Cas9 knockouts show tissue-specific cis-regulatory changes to Wnt1 and Wnt6 drive caudal horn size differences.
  • Modularity of Wnt genes allows morphological evolution without widespread deleterious effects.