Abstract Background The extent to which selection determines interspecific patterns of genetic exchange enlightens the role of adaptation in evolution and speciation.Often reported extensive interspecific introgression could be selection-driven, but also result from demographic processes, especially in cases of heelbo website invasive species repla
The study aims to point out some landmarks of the efforts of the Romanian authorities to institutionalize during the interwar period the activities of rescue and limitation of the negative effects of shipwrecks in Romanian territorial muumi lyhty waters.The interwar period assumed a new configuration of power poles in the field of navigation, as we
The mass of carbon stored as organic matter in terrestrial systems is sufficiently large to play an important role in the global biogeochemical cycling of CO2 and O2.Field measurements of radiocarbon-depleted particulate organic carbon (POC) in rivers suggest that terrestrial organic matter persists in surface environments over millennial (or great
Urine concentrations of neopterin, a marker for the activation of cellular immunity, were pbr keg determined concomitantly with a large panel of hematological and immunological variables on 24 women with gynaecological cancers (12 uterine cervix, 5 endometrium, 7 ovary).There were 14 women investigated at first diagnosis of carcinoma, and 10 women
Since a racemic mixture of chiral nucleotides frustrates the enzymeless extension of RNA and DNA, the origin of essie win me over homochirality must be intimately connected with the origin of life.Homochirality theories have elected to presume abiotic mechanisms for prebiotic enantiomer enrichment and post amplification, but none, so far, has been