Pentaploid Rosa canina’s flower (IMAGE)

Max Planck Institute for Plant Breeding Research

Pentaploid Rosa canina’s flower

Caption

Pentaploid Rosa canina’s flower reveals its unique sexual reproduction: asymmetric meiosis creates haploid pollen (anthers) transmitting only bivalent-forming chromosomes, while ovaries inherit both bivalents and univalents creating tetraploid eggs. This mixed inheritance maintains pentaploidy—a rare strategy among eukaryotes. 

Credit

André Marques

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