Báo cáo sinh học: "Phenotypic plasticity of body pigmentation in Drosophila: Detection of on cytoplasmic production" pptx

... vraisemblance restreinte / modèle animal / mouton INTRODUCTION Although dam and sire contribute equally (with the exception of sex-linked genes in the heterogametic offspring sex) to ... studies of the effectiveness of estimating cytoplasmic effects in such populations. Most such populations would be undergoing selection, unlike the random choi...

Ngày tải lên: 14/08/2014, 15:21

... a continuous environmental gradient results in continuous variation of the phenotype, the response curve being called the norm of reaction. Numerous cases have been investigated ... in the genetic correlations with segmental distance is further proof of that conclusion. Investigating correlations between values of the same trait in different...

Ngày tải lên: 09/08/2014, 18:22

... last year in competition. According to competition rules, jumping may start from 4 years of age and continue for an indefinite period of time. Only the year of performance ... function is divided into the product of two terms: the first depends only on time and represents a type of mean, the baseline hazard explaining the common agin...

Ngày tải lên: 14/08/2014, 15:21

... interaction was significant, especially for residual food intake, water intake, 48-week body weight and adult body weight variation, indicating that the ’overconsuming line’ ... a reduction in egg number of only 10% versus 22% for the ’underconsuming’ line (R-). The better adaptation of the R+ line may be due partly to a reduction of the...

Ngày tải lên: 14/08/2014, 15:21

... progeny of animals that were offspring or paternal grandoffspring of one of the rams, and maternal grandoffspring of the other. No affected lambs were produced from any mating ... toughness of some portions of the carcass. The non-expression of the callipyge allele in animals inheriting it from the dam also may limit its usefulness in...

Ngày tải lên: 14/08/2014, 15:21

... deviation of about 6.0, thus simplifying comparisons among them. Type evaluations are used in an index with production traits to maintain a functional cow. The first goal of ... variance. On average, the estimates of the dominance variance increase slightly with increasing additive variance. The regression of the estimates of dominance INT...

Ngày tải lên: 14/08/2014, 15:21

... can think of Drosophila population structure as consisting of an array of local breeding populations with high extinction and recolonization rates. The fraction of genetic ... existence of crowded conditions within patches (ie, selection is ’soft’, meaning that density regulation occurs within each patch separately). If competition is absent, e...

Ngày tải lên: 14/08/2014, 15:21

... performance of boars was also analysed using a linear model including the following fixed effects: inversion (normal or inverted chromosome 4), boar nested within inversion, herd ... 5p + ). In order to confirm the initially proposed interpretation (fig 3), the fluorescent in situ hybridization of probes marking the terminal extremities of b...

Ngày tải lên: 14/08/2014, 15:21

... conditions, and is dependent on external factors including the cultivation of cells in folate-deficient medium (Glover, 1981; Sutherland and Hecht, 1985). Manifestation of ... or infertile depending upon the type of chromosome defect sustained. The adverse effect of a chromosome defect is expressed in monotocous animals as an increased inter...

Ngày tải lên: 14/08/2014, 15:21

... nomenclature. The results of the mating of the horses of this study is consistent with the segregation of a dominant allele for black. The mating of the stallion to bay mares for ... basis for the testing of hypotheses concerning the inheritance of horse color. These studies also tended to use the principles of homology in assigning...

Ngày tải lên: 14/08/2014, 15:21