Báo cáo sinh học: "Phenotypic plasticity of body pigmentation in Drosophila: Analysis of factors affecting length of competitive life of jumping horses" pot

... correlations from isofemale lines data? b) To what extent are different genes involved in determining the extension of black pigment in different body segments? c) We ... that of abdominal segment 5 in more cases than with that of abdominal segment 7. In previous work [9, 13] it was argued that different shapes of reaction norms in...

Ngày tải lên: 09/08/2014, 18:22

... of performance, and jumping ability. DISCUSSION AND CONCLUSION This preliminary study identified some of the main factors influencing length of competitive life for jumping ... for later results? In: EAAP Madrid, Horse Commission, 13-17 September Original article Analysis of factors affecting length of competitive life of jumping...

Ngày tải lên: 14/08/2014, 15:21

... sire contribute equally (with the exception of sex-linked genes in the heterogametic offspring sex) to the genotype of their offspring, it is accepted that progeny performance ... probability of finding significant cytoplasmic effects was assessed by use of likelihood ratio tests of model 7 versus model 3, assuming that -2 2 times the differ...

Ngày tải lên: 14/08/2014, 15:21

... M6rat P (1991) Evidence of a genetic control of diet- induced thermogenesis in poultry. In : Proceedings of the 12 th Symposium of Energy Metabolism of Farm Animals, EAAP ... were observed in both lines: reduction of food intake (- 16%), egg number and egg mass (- 13%), mean clutch length, more days of pauses, depression of body...

Ngày tải lên: 14/08/2014, 15:21

... paternal grandoffspring of one of the rams, and maternal grandoffspring of the other. No affected lambs were produced from any mating that did not have at least one of these ... congenita in sheep causes episodes of muscular rigor following various stimuli. Episodes are transitory and do not harm the animal. Incidence in the flock of...

Ngày tải lên: 14/08/2014, 15:21

... ratio of the estimates of inbreeding depression to dominance standard deviation. In absolute terms, the av- erage ratio of estimates of inbreeding depression per 1% of inbreeding ... ’dominance content’ in the data was small and the sampling variance of the dominance estimates was high. Second, inbreeding was calculated without considering...

Ngày tải lên: 14/08/2014, 15:21

... numbers of mating pairs contributing to a breeding site. The main steps of our reasoning for disentangling the effects of drift and selection are summarized in figure ... that remained in the field for 108 h, the wing length of up to five males per collection was measured (see Leibowitz et al, 1995). Wing length was used as an in...

Ngày tải lên: 14/08/2014, 15:21

... generations of offspring of boar !1!, as well as on the parents of boar (2!. The abnormality was then diagnosed again in karyotypes of two other boars of the same ... time) and of the inversion (normal or inverted chromosome 4). The reproductive performance of boars was also analysed using a linear model including the following fixed...

Ngày tải lên: 14/08/2014, 15:21

... external factors including the cultivation of cells in folate-deficient medium (Glover, 1981; Sutherland and Hecht, 1985). Manifestation of Fra Xq in cattle, as observed in this ... or infertile depending upon the type of chromosome defect sustained. The adverse effect of a chromosome defect is expressed in monotocous animals as an incre...

Ngày tải lên: 14/08/2014, 15:21

... basis for the testing of hypotheses concerning the inheritance of horse color. These studies also tended to use the principles of homology in assigning loci and alleles ... Note Dominant black in horses DP Sponenberg MC Weise Department of Biosciences and Pathobiology, Virginia-Maryland Regional College of Veterinary Medicine, Virginia Tech, Bla...

Ngày tải lên: 14/08/2014, 15:21