Features of ontogenetic development of Drosophila melanogaster in the dysgenetic cross system
Grishaeva, T.M.; Ivashchenko, N.I.
Genetika 31(9): 1233-1242
1995
ISSN/ISBN: 0016-6758 PMID: 7489887 Document Number: 446168
Three families of mobile elements that induce P-M, H-E, and I-R hybrid dysgenesis in Drosophila melanogaster were activated by crossing files of different cytotypes. Manifestation of gonadal sterility in F1 hybrid progeny was dependent on the temperature of development. The systems differed significantly in lethality of F2 hybrids at various stages of ontogeny (embryos, larvae, pupae, and adult flies). The highest embryo lethality was found in the P-M system at the cleavage stage. In the I-R and H-E systems, the peak of embryonic death corresponded to the stages of blastoderm and organogenesis, respectively. Experimental results are discussed in view of molecular and cytological characteristics of interacting strains and existing hypotheses for regulation xof transposition of P, hobo, and I mobile elements.