Paternal age at birth, a potential proxy of mutation load transmitted to the offspring, has previously been related offspring’s health, biological condition and reproductive potential. As higher facial asymmetry distinctiveness serve as putative markers lower genetic quality an individual, we hypothesize that more advanced paternal birth will be children’s levels distinctiveness. To best our kn...

Adult female cercopithecines have long been known to bias their social behaviour towards close maternal kin. However, much less is understood about the behaviour of paternal kin, especially in wild populations. Here, we show that wild adult female baboons bias their affiliative behaviour towards their adult paternal half-sisters in the same manner and to the same extent that they bias their beh...

This study examined family and neighborhood influences relevant to low-income status to determine how they combine to predict the parenting behaviors of Mexican-American mothers and fathers. The study also examined the role of parenting as a mediator of these contextual influences on adolescent internalizing and externalizing symptoms. Study hypotheses were examined in a diverse sample of Mexic...

Variability in demographic traits between individuals within populations has profound implications for both evolutionary processes and population dynamics. Parental effects as a source of non-genetic inheritance are important processes to consider to understand the causes of individual variation. In iteroparous species, parental age is known to influence strongly reproductive success and offspr...

Previous research suggests that serious maternal mental illness is associated with adverse youth outcomes. However, this research is of limited ability to inform appropriate social work and social policy responses for at least two reasons. First, it is based on samples that are not racially or ethnically diverse and that do not target low-income families; second, it does not examine whether dif...

Mitochondrial homoplasmy signifies the existence of identical copies of mitochondrial DNA (mtDNA) and is essential for normal development, as heteroplasmy causes abnormal development and diseases in human. Homoplasmy in many organisms is ensured by maternal mtDNA inheritance through either absence of paternal mtDNA delivery or early elimination of paternal mtDNA. However, whether paternal mtDNA...

Abstract Background Leukemia is the most prevalent childhood cancer, and Acute Lymphoblastic Leukemia (ALL) constitutes 75% of all cases. Some epidemiological studies have shown a relationship between socioeconomic status (SES) and some childhood cancers. In the present study, an attempt was made to assess socioeconomical status in a case-control study. Materials and Methods In 2010, a c...

The unique and interactive effects of paternal and maternal alcohol problems on the drinking behavior of adolescent girls and boys were investigated. A prospective design was employed to examine changes in youth drinking behavior over a 3-year period in a community-based sample of 695 families. Results revealed that, as maternal alcohol problems increased, the likelihood of adolescent alcohol u...