LING Fa-yao, Osamu Kitagawa. 1991: The Study of B Chromosomes In Drosophila albomicans Ⅰ. The Number and Frequency of Bs In Kunming Population. Zoological Research, 12(1): 93-98.
Citation: LING Fa-yao, Osamu Kitagawa. 1991: The Study of B Chromosomes In Drosophila albomicans Ⅰ. The Number and Frequency of Bs In Kunming Population. Zoological Research, 12(1): 93-98.

The Study of B Chromosomes In Drosophila albomicans Ⅰ. The Number and Frequency of Bs In Kunming Population

  • In this study,mitotic metaphase of Drososphila albomicans with B-chromosomes were found in Kunming population.Their frequency of presence of B-chromosomes were 69.1%.At present,among D.albomicans has been studied from several localities,the frequency of B-chromosomes of Kunming population were the hightest.The number of B-chromosomes varied from 1 to 6 and differed between each iso-femals line of them as well as that of between individuals and cells.All the B-chromosomes were the smallest,dot-shaped of the karyotype.Both C-band and G-band staining are positive for B-chromosomes.
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