TABLE OF CONTENTS
J.H. Croft page 7
Control of perithecial production
J.H. Croft pages 7-8
Recovery of unstable variants after acridine treatment
A.C. Butcher page 8
Crossing ability in A. nidulans
A. Upshall pages 8-9
Persistent multiple somatic segregation
A.P.J. Trinci & C. Whittaker pages 9-10
Stimulation of spore germination in Aspergillus nidulans by carbon dioxide
C.F. Roberts, R.A. Hutter & J. DeMoss pages 10-11
Analysis of the tryptophan path in A. nidulans
E. Pees pages 11-12
Lysine, histidine, and isoleucine mutants.
A.J. Clutterbuck & U.K. Sinha pages 12-13
N-methyl-N'-nitro-N-nitrosoguanidine (NTG) as a mutagen for Aspergillus nidulans
C. Herman & A.J. Clutterbuck pages 13-14
A method of selection of auxotrophs by means of "spidery" growth.
E. Kafer pages 14-15
Multiple mitotic crossing over in the centromere region or diffuse centromeres?
Preliminary Notes
C. Morpurgo & C. Calvori page 16
Variable frequency of back mutation in different genomes
G. Morpurgo & L. Volterra page 16
Fine analysis of mitotic intracistronic crossing-over in Aspergillus nidulans.
A.M. Millington-Ward pages 16-17
A Replicator for Random Colonies
E. Forbes & U.K. Sinha page 17
Location of some teperature sensitive mutants
B.W. Bainbridge, H. Dalton, & J.H. Walpole page 18
Identification of the arginosuccinase gene
B.W. Bainbridge page 19
Table of Located or Partially Located Mutants
B.W. Bainbridge pages 20-21
A Revised Map of Linkage Group III
J.A. Roper page 22
Culture temperature and biotin requirement in Aspergillus.
B.H. Nga pages 22-23
Vegetative Instabillity Associated with Chromosome Duplication in Aspergillus nidulans.
C. Ball pages 23-25
Further studies on instability associated with gene suppression.