Taking a different approach, the researchers took a set of regulatory genes,
called a GAL regulon, that normally processes galactose — a favorite on the yeast menu of nutrients — and replaced some of the genes with those that become activated by, and direct the breakdown of,
xylose.
However, the researchers took a set of regulatory genes,
called a GAL regulon that normally processes galactose and replaced some of the genes with those that become activated by and direct the breakdown of
xylose.