Báo cáo sinh học: "Transposable elements in South American populations of Drosophila simulans" pdf

... encountered only in the two North American populations; all the South American populations are devoid of this element. Considering our findings of few hobo sequences in older ... argument in favor of this possible event is the reduced number of copies of deleted elements in the South American populations, most of all, the abs...

Ngày tải lên: 09/08/2014, 18:22

... morphology. Rearing T-32 at 32°C results in a high frequency of alterations in telomere morphology, and sublines differing in telomere morphology can be stably maintained at 23° ... unlabeled in the other sublines. INTRODUCTION Polytene chromosomes from different wildtype strains of Drosophila melanogaster can differ by the amount of chromati...

Ngày tải lên: 14/08/2014, 20:20

... between the numerous wine-cellar populations (wine-cellars are certainly the most common habitat of Drosophila melanogaster in France) and those living in other habitats (such ... variation in natural and laboratory populations of Drosophila melanogaster. Genetics, 67, 121-136. I. Introduction Generally, allozyme frequencies in natural popula...

Ngày tải lên: 09/08/2014, 22:23

... rate of an inactive element (the peach element inserted in the white gene) when induced by active elements present in isofemale lines of 3 natural populations of D simulans. ... rate of an inactive copy (peach) of the mariner transposable element, inserted in the white gene and responsible of the mutation (t!*!), was investigated i...

Ngày tải lên: 14/08/2014, 19:22

... more years of college by 2007. In terms of racial and ethnic profile, while fewer than 17 per cent of PAs were minority races (non-White) in 1980, the estimated percentage of PAs that were minorities increased ... between 2000 and 2005. The findings of increased percentage of minority PAs and levels of PA edu- cation in this study could serve as direct evidence of the ta...

Ngày tải lên: 18/06/2014, 17:20

... with inactivated viral vaccine provides significant protection in animals against chal- lenge with certain corresponding pathogenic CoVs, in the case of SARS-CoV there remains the threat of introducing live ... warranted when utilizing experimental data originating from one SARS-CoV strain infection in one animal species or cell line in the development of a human vaccine. The ra...

Ngày tải lên: 19/06/2014, 08:20

... DNA elements is thus not confined to the noncoding DNA in neighboring regions but clearly overlaps with coding sequences. These findings support an emerging view that gene regulatory and coding ... conserved elements are mainly present in non- coding regions, several studies have identified a significant number overlapping with coding regions (for example [3]). Interestingly, these la...

Ngày tải lên: 06/08/2014, 18:21

... exon-intron junctions, the cor- respondence being stronger in some genomes than others [5-9], which suggested a gene finding method [10]. In the same vein, comparisons of actin cDNA melting maps in animals, ... hours. In some types of low temperature melting studies, the features of interest are the bubbles rather than the helical regions. In such appli- cations, switching off...

Ngày tải lên: 12/08/2014, 17:20

... control of infec- tious disease. Since playing an important part in the birth of Molecular Biology more than 50 years ago [1], phage research has continually broken new ground in our under- standing ... mechanisms for replication, maintenance and expression of the genetic material and is providing new insights into origins of infectious disease and the potential use of phage gen...

Ngày tải lên: 18/06/2014, 22:20

... 1992), the effect of calving season (winter, spring, summer or autumn) and the effect of the age of the cow (in months) at first calving, were included in the regression model. This introduces eight ... and veterinary practice factors. Bayesian inference is performed by means of MCMC, as explained in Section 3. In Section 4 we suggest to study posterior rankings of sires, in t...

Ngày tải lên: 14/08/2014, 13:22