APRIL 27-28-MINUTES OF MEETING 
6 
the proposed revised Guidelines. Dr. Stetten expressed the 
reasoning for this as that one should not exempt something from 
guidelines and then immediately turn around and give guidance. 
This matter was brought up again later, with the suggestion 
that only part of this parenthesis be deleted but 
that there be retained the part which says "(However these 
should be inactivated prior to disposal) This motion was 
defeated 7 votes to 6. 
A motion then passed unanimously to add at the end of exemption 
(i), "(See Appendix D) ." 
Class ii : 
The RAC unanimously adopted exemption (ii) of Attachment II. 
Class iii : 
The RAC adopted exemption (iii), but then rewrote it as follows: 
"iii. Those that are derived frcm plasmids or 
viruses indigenous to a bacterial host (or 
found in nature in that host) where the 
recombinant DNA molecules prepared from those 
plasmids or viruses and host genane are pro- 
pagated within the host (or a closely related 
member of the same species) ." 
Following this, a motion to strike the word "bacterial" in 
iii was defeated 8 votes to 5. 
On the next day, a second part was added to exemption iii 
(modified slightly after the RAC meeting by Drs. Zaitlin and 
Talbot for clarity) -namely, "or derived entirely frcm the 
organelles (e.g., chloroplasts or mitochondria) of an organism 
where the recombinant DNA molecules prepared from the organelles 
are propagated within that organism (or a closely related member 
of the same species) ." 
Class iv : 
The RAC adopted exemption (iv) with the word "chromosomal" 
deleted. 
On the first day of the meeting, Dr. Falkow presented to 
the RAC a series of possible lists of organisms which 
could be recommended by the RAC to form the initial 
list of "species that exchange DNA" as discussed in 
exemption iv. Three different lists were discussed in 
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