BACKGROUND A major source of new mutations in humans is the male germ line, with mutation rates monotonically increasing as father's age at conception advances, possibly because of accumulating replication errors in spermatogonial cell lines. METHOD We investigated whether the risk of schizophrenia was associated with advancing paternal age in a population-based birth cohort of 87 907 individ...

The breastfeeding intention–behaviour gap remains wide in developed countries. Current studies have focused on maternal attitudes and behaviours concerning infant feeding order to explore barriers continuation. There has been limited consideration of the impact paternal behaviours, despite contemporary parenthood evolving evidence indicating that there are greater levels involvement routine chi...

The inheritance of several X-linked restriction fragment length polymorphisms ( RFLPs ) is examined in seven 46,XX males and their immediate relatives. The XX males are shown to have inherited a paternal and a maternal RFLP allele in each of the five (of seven) families in which these X-linked markers are informative. In the other two families, a maternal X-chromosomal contribution is demonstra...

The present investigation was aimed to develop restorer lines for three-line hybrid rice using indica/tropical japonica derivatives exploit the inter sub-specific heterosis. From 75 F4 families of CB174R/Azucena, two plants were randomly selected and screened simple sequence repeat markers DRRM-RF 3 -10 Rf3 gene RM6100 Rf4 gene. One hundred five possessing either or both genes test crossed with...

The mitochondrial genome of cucumber shows paternal transmission and there are no reports of variation for mitochondrial transmission in cucumber. We used a mitochondrially encoded mosaic (MSC) phenotype to reveal phenotypic variation for mitochondrial-genome transmission in cucumber. At least 10 random plants from each of 71 cucumber plant introductions (PIs) were crossed as the female with an...

Using a representative sample from Japan and difference-in-differences strategy, we investigate whether the effect of having grandchildren on happiness grandparents varies with gender their (own) single child. In line our expectations, find that maternal grandmothers have more to lose or less gain than paternal grandmothers. contrast, grandfathers' changes in do not depend own child's gender. T...

This issue of MHR contains six papers outlining and discussing the current state of our knowledge about male germ-cell DNA including the packaging of DNA during spermatogenesis and its unpacking in the oocyte, assessment of DNA damage in the male germ line and the consequences of this damage upon early embryo development and the subsequent generations. As is the nature of New Research Horizons ...

A new topology is proposed to regulate voltage sags/swells in distribution network this paper. Voltage sags and swells are a serious power quality problem faced by the industry. The major traditional restorer, based on energy storage device, not adequate for compensating deep long-duration sags/swells. To solve problem, novel bipolar direct AC/AC type restorer (AC/AC-VR) that both with regulati...

We describe a 17 year old male with a low level of trisomy 9 mosaicism. Maternal uniparental chromosome 9 disomy in the euploid cell line was shown to have arisen after postzygotic loss of the paternal chromosome 9 from the trisomic cell line by cytogenetic and molecular analysis. This is believed to be the first report of uniparental disomy for chromosome 9. In four of the 11 reported cases of...