Genetics : This was the Rosetta stone of the studies of the sex detemination in the Hymenoptera, but Whiting himself found that some species of microhymenoptera do not produce diploid males. In a group of 83 pupae raised from treated larvae with 10 -6 mg of juvenile hormone III, both female and diploid male adults emerged.
Camargo obtained 83 adults of which 38 were female queens and 45 diploid males Wikimedia Commons.
The sex-specific activity of the Drosophila gene is brought about by sexually processed transcripts encoding polypeptides that have male- and female-specific domains at their carboxyl-termini. These non-mated queens were laying unfertilized male eggs induced by repeated CO 2 treatments. McClung C. The authors have declared that no competing interests exist.
Upon microscopic analysis of sections of testicular tubules we observed elongated bundles, the spermatids, but no indication of the undifferentiated cell type that we found in sections of ovariole tissue from untreated females Figure 3I. When an ovum carrying the X-chromosome unites with a sperm carrying the X-chromosome, the resultant XX zygote develops into a female offspring.
The mutation rate of xo to xo 1or to xo 2or All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License. Average rate of mutation based on seven genes for eye colour. Sex in relation to chromosomes and genes.
These ratios apply, for example, throughout a bee hive, unless some laying workers produce offspring, which will all be males from unfertilised eggs: in that case, average relatedness will be lower than shown.
MBH Stuttgard, Germany. Reproduction in the social bees. Males of Scaptotrigona postica were seen collecting nectar and pollen in Senecio brasiliensis and Dombeya acutangula Kerr et al.