Latest Joan Strassmann Stories
A range of examples suggests a lack of information about their fellows can favor cooperation and prevent conflict among animals — and even among genes
Amoebas that are placid, model organisms in the lab, farm bacteria and carry guards to protect their crops in the wild
In 2011, Nature announced that scientists had discovered a single-celled organism that is a primitive farmer. The organism, a social amoeba called Dictyostelium discoideum, picks up edible bacteria, carries them to new locations and harvests them like crops.
Any multicellular animal, from a blue whale to a human being, poses a special challenge for evolution. Most of the cells in its body will die without reproducing; only a privileged few will pass their genes to the next generation.
Any multicellular animal, from a blue whale to a human being, poses a special difficulty for the theory of evolution.
A species of amoeba -- Dictyostelium discoideum -- has shown primitive farming behavior as it travels along, according to a new study.
Rice researchers find first to starve in slime mold thrive at others' expense.
Rice evolutionary biologists argue for new meaning of 'organismality'.
Cheaters may prosper in the short term, but over time they seem doomed to fail, at least in the microscopic world of amoebas where natural selection favors the noble.
- In dressmaking, straps running from the belt in front over the shoulders to the belt in the back, with more or less elaboration of trimming and outline. They usually broaden at the shoulder and narrow toward the waist.