Tag: "divides" at biology news

Human evolution at the crossroads: Integrating genetics and paleontology

...perspectives," Hlusko continued. "These conceptual divides lead to a bit of isolation and separation, and are actually holding back progress in both research and training. This symposium will give us an opportunity to come together and talk across our differences." The true advancement in the understanding o...

Rb protein's role in retina development is key to understanding devastating eye cancer

...rn mice. A progenitor cell is a "parent" cell that divides and multiplies, giving rise to specific types of cells. One way the researchers solved the problem of embryos dying from lack of Rb was by taking advantage of the fact that the retina is still developing in newborn mice. The team used a virus to ins...

UVa researchers describe method of protecting chromosomes during cell division

...rocess known as mitosis. "During mitosis, the cell divides replicated chromosomes to two daughter cells. We are studying a mitotic system that ensures that each cell receives the right number of chromosomes," said article co-author Todd Stukenberg, assistant professor of biochemistry and molecular genetics a...

Scientists seek cause for what makes good cell go bad

...led organism, is much simpler than the system that divides human cells. But signal transduction networks exhibit the same design principles across species, Cluzel said. Consequently, researchers will now attempt to apply their research methods to higher organisms. A combination of traditional genetic experim...

Cinnamon may help to alleviate diabetes says UCSB researcher

...try during the 1970s and decided to return. He now divides his time between UCSB and the Sansum Institute. Using nuclear magnetic resonance and mass spectroscopy, the researchers obtained results which allowed them to describe the chemical structure of a molecule with "insulin-like" activity in cinnamon. Gra...

Stem cells toward sperm cells and back again

...eir stem cell status. When one of these stem cells divides in two, the "daughter" cell nearest the hub remain...n become cells called spermatogonia, each of which divides a number of times before becoming spermatocytes, precursors to sperm. To see whether lost stem cells...

UW-Madison scientists find a key to cell division

...lding blocks of the cell," Skop says. "As the cell divides and a new membrane forms, the proteins found during that time in the cell cycle would be crucial elements in understanding how the process works." The next step was to inactivate each protein in a developing embryo. If a defect occurred, it would ...

UC Riverside researchers discover new way to identify cell growth

...derive from a single cell, the fertilized egg that divides to generate different cell types, tissues and organs. Once the task has been completed, cells stop dividing and enter a dormant phase of the cell cycle. So any advance in recognizing the complex interplay of proteins that control and regulate the cel...

Technology already exists to stabilize global warming

...e their idea, the researchers created a graph that divides the problem into seven 1 billion-ton-per-year "wedges." (See figures.) In their paper and 51 pages of supplementary online material, they identify opportunities and difficulties associated with each option and compare alternative combinations of seve...

Critically endangered monkey species plummets more than 50 percent since 1994

...o the increasing amount of agricultural space that divides them. "Delacour's langur is one of the most Critically Endangered primates in the world, and its status is indicative of what is happening with about 10 percent of the nonhuman primates, our closest living relatives. We don't have a lot time to reve...

Human chromosome 5 final sequence analysis released to public

...e for the two chromosomes to pair up when the cell divides to create sperm and eggs. Over time, that incompatibility could have driven a reproductive wedge between the evolving populations. Moving evolutionarily further away, about one-third of chromosome 5 is similar to a chicken chromosome that determines...

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