THE BEHAVIOR OF B-CHROMOSOMES OF TAINIA LAXIFLORA IN MALE GAMETOGENESIS1)

Abstract
The B-chromosomes of T. laxiflora behaved like the ordinary chromosomes in both meiotic divisions of pollen mother cells and in successive mitotic divisions. As a result, most of the male gametes are presumed to carry the B-chromosomes. [The mechanism of the accumulation of B-chromosomes is observed to be due to non-disjunction and preferential distribution into the gametes.] The regular meiotic and mitotic behavior of B-chromosomes is considered to be a major cause of the high occurrence of the clones with B-chromosomes in this species.

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