Racial divergence in sternopleural bristles among the parental races and the newly evolved Cytoraces 1 and 2 of the nasuta-albomicans complex of Drosophila

Harini, B. P. ; Ramachandra, N. B. (1999) Racial divergence in sternopleural bristles among the parental races and the newly evolved Cytoraces 1 and 2 of the nasuta-albomicans complex of Drosophila Current Science, 76 (7). pp. 1017-1019. ISSN 0011-3891

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Official URL: http://www.currentscience.ac.in/php/toc.php?vol=07...

Abstract

Interracial hybridization between a pair of cross fertile races, Drosophila nasuta (2n = 8) and Drosophila albomicans (2n = 6) has resulted in the evolution of new karyotypic strains, called Cytoraces, under laboratory conditions. These Cytoraces have inherited chromosomes from both the parents. Here we report the racial divergence in sternopleural bristles among the parental races and the newly evolved Cytorace 1 and 2. This analysis has revealed that the parental race, D. nasuta has lesser number of bristles than D. albomicans, Cytorace 1 and Cytorace 2. These newly evolved Cytorace 1 and Cytorace 2, with more number of sternopleural bristles, show better fitness.

Item Type:Article
Source:Copyright of this article belongs to Current Science Association.
ID Code:111034
Deposited On:31 Jan 2018 11:38
Last Modified:31 Jan 2018 11:38

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