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Schematic illustration of the fate of fertilized embryo sac with B chromosomes (without considering the mechanism of B chromosomes accumulation). Most embryo sacs developed into diploid kernels with B chromosomes. A small number of them developed into haploid kernels with (seldom) or without B chromosome. The rest of embryos became defective kernels. The development of zygotes is complicated, and it is yet to be confirmed whether the embryo will be produced
