1.   Guarente and his colleagues showed that when the yeast helicase gene is disrupted, the yeast cells become more sensitive to the waste circles and age prematurely.

2.   Suppose you believe that a human gene and a yeast gene serve the same function.

3.   That is why a novel idea for trying to understand all yeast genes very rapidly is drawing considerable interest among biologists.

4.   The Whitehead scientists say they will have a complete description of the regulatory components of yeast genes by next summer.

5.   Researchers have tinkered with the yeast genes for decades and thought they knew everything about it.

6.   The base sequences of most yeast genes translate literally into the proteins they encode.