Sex chromosome inactivation is essential epigenetic programming in male germ cells. However, it remains largely unclear how epigenetic silencing of sex chromosomes impacts the evolution of the mammalian genome. Here we demonstrate that male sex chromosome inactivation is highly conserved between humans and mice and has an impact on the genetic evolution of human sex chromosomes. We show that, i...

I find introspection to be painful. Looking back, I recall doing little of it before age sixteen. Instead, I mainly did the things that I was instructed to do. I studied hard and performed well in courses and examinations, for no deeper reason than that this was what one was supposed to do. As an adult I have introspected when it has seemed constructive to do so, but I still try not to overdo i...

P. 3 Is there a zombie nation in our future? A continual humans vs. zombies battle would make for an entertaining school day, don't you think? AftE '*WI$r' p. 10 It might put you in a Wyrd funk Rice Players' Wyrd Sisters misfires on a number of dramatic levels. But that Hwel guy sure is good. SPORTS P. 14 Jazzing it up Go behind the scenes with former Rice basketballer Morris Almond, as he talk...

Background Cytogenetic study of reproductive wastage is an important aspect in determining the genetic background of early embryogenesis. Approximately 15 to 20% of all pregnancies in humans are terminated as recurrent spontaneous abortions (RSAs). The aim of this study was to detect chromosome abnormalities in couples with RSAs and to compare our results with those reported previously. Materia...

Based on the HVZ theorem and dilation analyticity of the pseudorelativistic no-pair Jansen-Hess operator, it is shown that for subcritical potential strength (Z ≤ 90) the singular continuous spectrum is absent. The bound is slightly higher (Z ≤ 102) for the Brown-Ravenhall operator whose eigenvalues λ are, by the virial theorem, confined to λ < 2m if Z ≤ 50.

X-chromosome and its independent loci recently gained importance in genetic investigations concerned with disease control-case studies, population analyses, phylogenetic investigations. Infertility lack of normal reproduction are important issues health. Aazoospermia is a kind infertility men whose semen contains no sperm can affect about 1-20% the male population. The majority cases spermatoge...

Background: Due to different such as some sexrelated illnesses, spouses have been encourage to designate special treatments for assessing sexuality. Moreover, Utilizing from identifying sexulityb has been an important aim in industry in order to product humans needs and develop cattle. In this research, the effect of alkaline environments were examined migration spermatozoa for sex selection. M...