Báo cáo sinh học: "Phenotypic plasticity of body pigmentation in Drosophila: Breeding structure of Drosophila buzzatii in relation to competition in prickly pears (Opuntia ficus-indica)" potx

... for estimating genetic correlations from isofemale lines data? b) To what extent are different genes involved in determining the extension of black pigment in different body segments? ... Cheverud to propose his conjecture according to which phenotypic correlations could be used in many cases as a crude estimate of genetic correlations....

Ngày tải lên: 09/08/2014, 18:22

... smaller number of starts than horses remaining alive throughout this year. To assess the influence of the level of earnings regardless of the influence of the number of starts, an ... was defined in order to obtain adjustment factors for earnings, as independent as possible of the number of starts. Consequently, this model included a...

Ngày tải lên: 14/08/2014, 15:21

... population with cytoplasmic effects but their interest was in biases introduced through ignoring cytoplasmic effects, and not in the detection of cytoplasmic variance. In this paper ... years of data for the detection of cytoplasmic effects is the difference in number of generations in which the cytoplasm may become independent from nu...

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 ... residual food intake, water intake, 48-week body weight and adult body weight variation, indicating that the ’overconsuming line’ (R +) was better adapted to the...

Ngày tải lên: 14/08/2014, 15:21

... 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 that did ... the gene being introduced by the two rams and not existing in the flock before their use. The only instances of affected lambs in this flock followed matings...

Ngày tải lên: 14/08/2014, 15:21

... dominance variance would correspond to a higher magnitude of inbreeding depression. The last goal of the paper was to examine the relationship between estimates of dominance ... vector of records, (3 is a 23 697 x 1 vector of management and age at calving effects, 0 is the coefficient of inbreeding depression, a is a 732 644 x 1...

Ngày tải lên: 14/08/2014, 15:21

... buzzatii suggesting that intraspecific competition is occurring within the breeding sites. The negative correlation between the wing length of D buzzatii and the number of ... 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...

Ngày tải lên: 14/08/2014, 15:21

... Hamerton JL (1969) Cytoge- netic and endocrine studies of a freemartin heifer and its bull co-twin. Cytogenetics 8, 369-388 Switonski M (1987) A pericentric inversion in an ... 194-202 Original article A pericentric inversion of chromosome 4 in pigs A Ducos 1 A Pinton A Séguéla HM Berland MF Blanc A Darré 2 P Pinton M Yerle R Darré 1 Ura Inra-ENV...

Ngày tải lên: 14/08/2014, 15:21

... 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 interval ... repeat breedings, long calving intervals and abortions in individual cases. These assessments both agree with and reinforce previous cases presented in the literature in...

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 ... the existence of a dominant gene contributing to black or dark bay phenotypes in the French Trotter breed, and mentions that this is rare in horses of European...

Ngày tải lên: 14/08/2014, 15:21