Parental chromosomes kept apart during first division
Science & Technology Mammalian life begins differently than we thought
2018
sciencescience-technology
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The cell that isn’t
Science & Technology 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…
2013
sciencescience-technology
Fishing games gone wrong
Science & Technology 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…
2011
sciencescience-technology
Constant overlap
Science & Technology 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…
2010
sciencescience-technology
A unique arrangement for egg cell division
Science & Technology 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…
2007
sciencescience-technology
A matter of force
Science & Technology 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…
2007
sciencescience-technology
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