Contagious Asexuality?

New research from Indiana University used genomic sequencing of Daphnia to determine that all asexual lineages share common alleles on 2 chromosomes.  More highlights:

  • asexual males spread elements that suppress meiosis throughout sexual populations
  • asexual strains are even younger than once thought (origin ~1250 years ago)
  • introduction of meiotic suppressors leads to localized extinction of populations due to accumulation of deleterious mutations
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