Báo cáo sinh học: "Selection in sympatric populations of Cepaea" pps

... 32 sympatric. For the purpose of analysis, only 23 sympatric populations of nemoralis and 26 of hortensis were considered. The difference in the number of sympatric populations ... populations. We study them in a zone where Cepaea hortensis is at the edge of its range. Marginal populations are interesting since they may be found...

Ngày tải lên: 14/08/2014, 19:23

... method is distinct from any ‘tree of one percent’ [9] or genome averaging approach in that rather than being discarded, genes undergoing horizontal transfer are included in the final reconstruction ... Thus, combining genes with different histories into a single data set will almost certainly result in a phylogeny that represents neither the history of any individual gene, nor the h...

Ngày tải lên: 06/08/2014, 19:20

... considerable amount of uncertainty in the point estimates, and the 95% posterior density intervals of different heritabilities are in most cases partly overlapping (Tab. II). Incidence in the previously ... without the pedigree information in the model. This effect would have accounted for the variance due to common incubation and initial rearing of full-sib families, and for part...

Ngày tải lên: 14/08/2014, 13:22

... ordered set of finite permutations ordered by deletion of entries contains an in nite antichain. In other words, there exists an in nite collection of permutations no one of which contains another ... number of elements preceded by i in p 1 .Inother words, the i-th smallest remaining entry of p 2 precedes the j-th one if and only if i precedes j in p 1 . In short, p 1 <...

Ngày tải lên: 07/08/2014, 06:20

... been identified by the measurement of plasma activities of intracellular enzymes such as creatine kinase (CK). Large increases of CK in the circulation indicate alterations in muscle membrane (sarcolemmal) ... 2 Division of Cell Sciences, Faculty of Veterinary Medicine, University of Glasgow, Bearsden Road, Glasgow, G61 1QH, 3 Division of Farm Animal Science, Department...

Ngày tải lên: 14/08/2014, 13:21

... introgression is to combine both QTL identification and introgression, into a single step. This combines the strengths of fine mapping and backcrossing and paves the way for introgression of ... unknown QTL into recipient animal and plant lines. Methods: The method consisting in combining QTL mapping and gene introgression has been extended from inbred to outbred populations in w...

Ngày tải lên: 14/08/2014, 13:21

... important development of artificial insemination (AI) since the end of the 1980’s [12] hasresulted in an intensification of the control programmes, andin a drastic modification of their structure [10]. ... 10.1051/gse:2002014 Original article Cytogenetic and molecular characterization of eight new reciprocal translocations in the pig species. Estimation of their incidence in Fr...

Ngày tải lên: 14/08/2014, 13:21

... therefore to be t aken to avoid high rates of inbreeding when selecting against the disease in such small populations. Increased inbreeding could for instance result from direct selection for ... with constrained inbreeding in schemes with overlapping generations, Anim. Sci. 70 (2000) 373–382. [12] Henderson C.R., Applications of linear models in animal breeding, University of G...

Ngày tải lên: 14/08/2014, 13:22

... sampling variance in its progeny can be eliminated, however, by adjusting the within-family variance for the inbreeding level of the parents. Furthermore, the effect of a selective advantage of ... 2C). In generations 4 and 5, the phenotypic variance decreases for all values of r A . Profit increases curvilinearly, as expected. The increase in profit is initially due mainly to incr...

Ngày tải lên: 14/08/2014, 13:22

... French populations; these populations mainly originated in southern France thus explaining why they are close to Mediter- ranean populations. Latitudinal clines Most of the populations ... patterns in the genetic variability of their natural populations. During the last 2 decades, they have been compared for numerous kinds of traits, includi...

Ngày tải lên: 14/08/2014, 19:22