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1 In short, the number of committee members who 
2 may be considered non-experts in rDNA research is very 
3 small. 
4 A similar picture emerges from examination of 
5 each membership category in the IBC's. All 30 committees 
6 had at least one scientist in a recombinant DNA discipline, 
7 and ten percent, or three of the committees, contained 
8 only recombinant DNA scientists. Related administrators 
g and peripherally related scholars were each represented 
10 on about 60 percent of the IBC's in the sample. The 
11 percentage of committees with members from the non-expert 
12 categories was much smaller. In fact, more than 70 per- 
13 cent of the IBC's surveyed had no representation at all 
14 of students, public citizens, workers, and non- related 
15 administrators, respectively. Overall, most of the IBC's 
16 in the sample included a limited number of different 
17 types of members. 
18 With these data one can also examine the 
19 relationship between size of committee and breadth of 
20 representation to see whether or not larger committees 
21 result in more diversified representation. Figure 4 
22 shows the average number of membership categories repre- 
23 sented in committees of different sizes, and indicates 
24 that up to a size of about ten members, breadth of 
25 representation did increase with size. Beyond ten members, 
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