In social animals, kin relations strongly shape the social structure of a group. In female-bonded species, maternal relatedness is likely to be mediated via familiarity, but evidence is accumulating that non-human primates are able to recognize kin that they are not familiar with and adjust their behavior accordingly. In playback experiments, female rhesus macaques showed increased interest in ...

The present paper demonstrates novel results confirming the phenomenon of multipaternity in Finn raccoons. The purpose of the study was to affirm the occurrence of bi-paternal litters in Finn raccoons using polymorphic microsatellite markers. The study was carried out on 37 Finn raccoon females, males that mated with them and the resulting offspring (176 individuals). The offspring came from fe...

in this study a total of 171,360 monthly test day milk records obtained from first lactation of iranian holstein cattle (three times a day milking) distributed in 96 herds and calved from 1999 to 2008 were used to estimate genetic parameters and to predict breeding values of the animals. the data was analyzed using random regression test day model. the results showed that average of heritabilit...

Studies of the various kinds of immunoglobulin (Ig) allotype and isotype suppressions induced by perinatal exposure to anti-Ig antibodies have yielded many valuable insights into the normal processes that control B cell differentiation and expression. For example, the demonstration that exposure to antibodies to an IgG isotype specifically suppresses production of that isotype, whereas the expo...

Many studies have shown familial aggregation for cervical cancer, but they have been unable to distinguish between shared environmental and genetic effects. Full and half-siblings were identified from the nationwide Swedish Family-Cancer Database, including invasive and in situ cervical cancers in women up to age 70 years. Half-siblings were defined through a common father or mother. Standardiz...

Relevance. To ensure the profitability of production, it is necessary to use certain schemes for crossing pigs different breeds. Since choice correct scheme can significantly affect final result. Crossbred animals, due effect heterosis, are superior in productive qualities original maternal and paternal The paper presents an assessment meat local young obtained as a result industrial three-bree...

The ability to distinguish immunoglobulin (Ig) of paternal allotype both on lymphocyte membranes and in the serum of neonatal b(4)b(5) heterozygous rabbits has allowed us to study the postnatal ontogeny of cells bearing endogenously synthesized Ig that could not have been derived from the mother. In normal b(4)b(5) rabbits, such endogenously synthesized Ig of paternal allotype is present on the...

An abundance of research demonstrates a robust association between father absence--or low-quality paternal involvement--and daughters' accelerated sexual development, promiscuity, and sexual risk taking. Although recent natural experiments provide support for fathers playing a causal role in these outcomes, these effects have not been examined using a randomized experimental design to eliminate...