Parental chromosomes kept apart during first division
Mammalian life begins differently than we thought
SCIENCE & TECHNOLOGY2018
sciencescience-technology
The cell that isn’t
This may look like yet another video of a dividing cell, but there’s a catch. You are looking at chromosomes (red) being pulled apart by the mitotic spindle (green), but it’s not a cell, because there’s no cell membrane. Like a child sucking an egg out of its shell, Ivo Telley from the…
SCIENCE & TECHNOLOGY2013
sciencescience-technology
Fishing games gone wrong
When an egg cell is being formed, the cellular machinery which separates chromosomes is extremely imprecise at fishing them out of the cell’s interior, scientists at the European Molecular Biology Laboratory (EMBL) in Heidelberg, Germany, have discovered. The unexpected degree of trial-and-error…
SCIENCE & TECHNOLOGY2011
sciencescience-technology
Constant overlap
During cell division, microtubules emanating from each of the spindle poles meet and overlap in the spindle’s midzone. Scientists at the European Molecular Biology Laboratory (EMBL) in Heidelberg, Germany, have uncovered the molecular mechanism that determines the extent of this overlap. In a…
SCIENCE & TECHNOLOGY2010
sciencescience-technology
A unique arrangement for egg cell division
Which genes are passed on from mother to child is decided very early on during the maturation of the egg cell in the ovary. In a cell division process that is unique to egg cells, half of the chromosomes are eliminated from the egg before it is fertilised. Using a powerful microscope, researchers…
SCIENCE & TECHNOLOGY2007
sciencescience-technology
A matter of force
When a cell divides, normally the result is two identical daughter cells. In some cases however, cell division leads to two cells with different properties. This is called asymmetric cell division and plays an important role in embryonic development and the self-renewal of stem cells. Researchers…
SCIENCE & TECHNOLOGY2007
sciencescience-technology
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