Divide and define: Clues to understanding how stem cells produce different kinds of cells
The human body contains trillions of cells, all derived from a single cell, or zygote, made by the fusion of an egg and a sperm. That single cell contains all the genetic information needed to develop into ...
Behavior breakthrough: Like animals, plants demonstrate complex ability to integrate information
A University of Alberta research team has discovered that a plant's strategy to capture nutrients in the soil is the result of integration of different types of information.
Researchers identify potential cancer target
(PhysOrg.com) -- Dartmouth Medical School researchers have found two proteins that work in concert to ensure proper chromosome segregation during cell division. Their study is in the January 2009 issue of ...
Could suburban sprawl be good for segregation? Low-density neighborhoods more likely to stay integrated
Racially and economically mixed cities are more likely to stay integrated if the density of households stays low, finds a new analysis of a now-famous model of segregation.
Faithful cell division requires tightly controlled protein placement at the centromeres
From fertilized egg to adult, the cells of the human body go through an astronomical number of divisions. During division of any of the body's roughly 30 trillion cells, DNA from the initial cell must be split precisely between ...
The bigger the group, the smaller the chance of interracial friendship, research finds
The larger the group, the smaller the chance of forming interracial friendships, a new University of Michigan study shows.Published in the Proceedings of the National Academy of Sciences, the study examines how the size o ...
The role of H3K9 in bringing order to the nucleus
(Phys.org)—Scientists from the Friedrich Miescher Institute for Biomedical Research have elucidated the histone modifications that lead to the sequestration of silent genes at the nuclear periphery. In ...
Bio-inspired polymer synthesis enhances structure control
A new bio-inspired approach to synthesising polymers will offer unprecedented control over the final polymer structure and yield advances in nanomedicine, researchers say.
New study shows how integrated institutions can lead diverse populations to cooperate in rebuilding countries
(PhysOrg.com) -- One of the most pressing issues in world affairs today is state building: how countries can construct stable, inclusive governments in which a variety of religious and ethnic groups coexist.
Sex segregation in schools detrimental to equality
Students who attend sex-segregated schools are not necessarily better educated than students who attend coeducational schools, but they are more likely to accept gender stereotypes, according to a team of psychologists.
Researchers model genome copying-collating steps during cell division
Researchers from Virginia Tech and Oxford University have proposed a novel molecular mechanism for the living cell's remarkable ability to detect the alignment of replicated chromosomes on the mitotic spindle in the final ...
Microbes point to method for isolating harmful forms of drugs
(PhysOrg.com) -- Scientists at MIT and Brown University studying how marine bacteria move recently discovered that a sharp variation in water current segregates right-handed bacteria from their left-handed ...
New images of marine microbe illuminate carbon and nitrogen fixation
Trichodesmium is unusual among marine microbes because it both "breathes" carbon dioxide like plants, while also taking nitrogen gas from the air and "fixing" it into a fertilizer of the seas.
Measuring the strength needed to move chromosomes
(PhysOrg.com) -- It’s about as long as the width of a human hair and only half that length across. So it’s tiny — measured in millionths of a meter — and extremely tricky to manipulate. But the meiotic spindle plays ...