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A review article on B chromosomes (Bs) in angiosperms is documented considering occurrence, morphology, polymorphic B forms, divisional phase heterogeneity, chromatin organization and gene content, sequence composition, origin, evolutionary aspects and significant role on host with an objective to foresee the evolutionary perspectives as it still remains an enigma. Irrespective of the origin of Bs, it seems that they have attained the following modifications, namely, insertion of centromeric and telomeric sequences, structural reorganization and procuring mitotic and meiotic drives but shows genetic inertness and present in the host as selfish DNA. In the context, few questions are raised. Further, scientific quest may unravel the unexplored information about Bs to ascertain its evolutionary perspectives, if any.

Citation

A K Datta, A Mandal, D Das, S Gupta, A Saha, R Paul, S Sengupta. B CHROMOSOMES IN ANGIOSPERM--A REVIEW. T︠S︡itologii︠a︡ i genetika. 2016 Jan-Feb;50(1):68-79

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PMID: 27266187

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