1.   Each of the nine genes is simply represented by a number in the computer, which will be called its value.

2.   And in the computer model too, the numerical values of the nine genes only mean something when they are translated into growing rules for the branching tree pattern.

3.   If only we could draw in nine dimensions we could make each dimension correspond to one of the nine genes.

4.   As a result, the other genes do not swing into action and children stop growing, wring their hands and become mentally retarded.

5.   About half of those early-onset cases are caused by inherited mutations in the three genes.

6.   After several reports that in retrospect seem puzzling or even incorrect, a major role of the two genes has now been uncovered.

7.   Each of the first three genes inhibits the activity of the next gene down the line.

8.   Hemophiliacs are born without one of the two genes.

9.   Offit said his patients did not distinguish between the levels of risk conferred by the two genes.

10.   Of the other genes, two are involved in helping the resistance gene package mobilize itself in different ways.