• JANNITZA ARANDIABARRIOS

      Articles written in Journal of Genetics

    • Evaluation of Drosophila chromosomal segments proposed by means of simulations of possessing hybrid sterility genes from reproductive isolation

      FRANCISCO GARCI´A-FRANCO LILIAN MILENA BARANDICA-CAÑON JANNITZA ARANDIABARRIOS EZEL JACOME GALINDO-PE´REZ GILBERTO SVEN BINNQÜIST CERVANTES MARTHA MARTÍNEZ GARCÍA BLANCA ESTELA CHA´VEZ-SANDOVAL

      More Details Abstract Fulltext PDF

      In heterozygote state, we interogressed three chromosomal segments of Drosophila koepferae in D. buzzatii. The effect of each introgression was evaluated in the fertility of the segmental males, quantifying the amount of offspring produced. Through specific crosses method, we generated Drosophila segmental isolines carrying specific chromosomal introgression segments. The introgressions were monitored cytogenetically by the method of molecular markers of chromosomal asynapsis. The statistical analysis showed that none of the three segments evaluated, introgressed individually or in pairs, as well as cis or trans, do not produce sterility in the segmental males, as determined by the normal productions of offspring. Additional introgressions using other larger segments show that when the introgressions reach a minimum size of 31.15%, they produce sterility. It is concluded that the hybrid sterility genes present in the three segments evaluated did not act in strong epistasis, but show a pattern of gradual additive behaviour by requiring a minimum threshold size to produce sterility. Finally, we also isolated the smallest introgressing segment that has been reported for these species (2.19%), and for the first time we have managed to place it in homozygous state (data not shown), so we are now in the process of evaluating the ability to these segments in homozygous state.

  • Journal of Genetics | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2021-2022 Indian Academy of Sciences, Bengaluru.