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GENETIC ANALYSES OF HEAT-SENSITVE PAWN MUTANTS OF PARAMECIUM AURELIA
Sheng-Yung Chang 1 and Ching Kung 1
1 Department of Biological Sciences, University of California Santa Barbara, California 93106
Heat-sensitive Pawn (ts Pawns) of Paramecium aurelia behaved normally when grown at 23° but failed to avoid strong stimuli at 35°. Four of the five ts Pawn lines tested were found to be allelic at a locus known also to carry temperature-independent Pawn mutations. The fifth ts Pawn line complemented all the conditional and unconditional Pawn mutants of the two known loci. This result, together with the patterns of F2 segregation from various crosses, suggested the existence of a third Pawn locus. An additive effect of the unlinked ts Pawn genes was observed. These findings and the significance of ts Pawns as experimental material in behavioral and physiological research are discussed.
Submitted on March 6, 1973Revised on May 14, 1973
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  W. J. Haynes, B. Vaillant, R. R. Preston, Y. Saimi, and C. Kung The Cloning by Complementation of the pawn-A Gene in Paramecium Genetics, June 1, 1998; 149(2): 947 - 957. [Abstract] [Full Text] [PDF]
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 C Kung, S. Chang, Y Satow, J. Houten, and H Hansma Genetic dissection of behavior in paramecium Science, May 30, 1975; 188(4191): 898 - 904. [PDF]
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