B chromosomes put the 'super' in supernumerary.

B chromosomes—supernumerary chromosomes beyond the essential set—are increasingly understood through modern genomic and cytological advances, revealing their formation and dynamics.

• Why it matters: Their biology remains fascinating and underexplored, and new methods are needed to clarify how extra chromosomes arise, persist, and behave.
• What they did: The work reviews B chromosome research history and examines formation and dynamics using advances in genomic and cytological technology.
• The result: The outlook highlights how novel B chromosome biology could be exploited as tools for biotechnology, agriculture, and advances in human health.

AI summary of the abstract · may contain errors · not medical advice · read the paper.