B-chromosome systems in the pocket mouse,Perognathus baileyi: Meiosis and C-band studies |
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| Authors: | James L Patton |
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| Institution: | (1) Museum of Vertebrate Zoology, University of California, 94720 Berkeley, California, USA |
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| Abstract: | The heterochromatin characteristics and meiotic behavior of the B-chromosome system of the pocket mouse, Perognathus baileyi, are described. B-chromosomes are associated both with a meiotic accumulation mechanism and with an increase in average chiasma frequency in the A-chromosome set in males. Three morphological classes of B-chromosomes are recognizable, and the mechanisms of origin of each are discussed. |
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