1.   By comparison, scientists have recently discovered that the C. elegans worm relies on sperm for giving it direction in life.

2.   The two researchers first met in Cambridge in the laboratory of Sydney Brenner, the biologist who selected the C. elegans worm as a model animal for scientific study.

3.   People may find numbers like these disquietingly close to the totals for the Arabidopsis plant or the C. elegans worm.

4.   After all, that was fewer genes than the C. elegans worm, which seemed a simpler creature.