Volume III 



SEPTExMBER, 1913 



No. 2 



REDUPLICATION SERIES IN SWEET PEAS. 



"""Tunica'. 



By R. C. PUNNETT, M.A., F.R.S. 



CONTENTS. 



PAGE 



Introduction . 77 



A. The B, E, L series : 



(1) The relation between B and L 78 



(2) „ „ „ B and E 80 



(3) „ „ ,, E and L 80 



(4) The relations between B, E, and L in plants heterozygous 



for all three factors 81 



B. The D, F, N series : 



(1) The relation between D and F 84 



(2) „ „ „ F and N Si 



(3) „ ,, „ N and D 88 



(4) The relations between D, F, and N in plants heterozygous 



for all three factors . 88 



Primary and secondary reduplications 90 



Conclusion 93 



Literature ............. 95 



Tables 96 



Introduction. 



The present paper aims at bringing together some of the results of 

 work done with sweet peas during the seasons 1908-13, and especially 

 that part of it which concerns the phenomenon of the reduplication of 

 terms in the gametic series.' Some of the results have already been 

 published in two short papers (Bateson and Punnett, (4) and (5))\ 

 The work is far from completion, but as the subject is beginning to 

 excite greater interest it has seemed advisable to collect together and 

 publish these records for the use of other students. Many new points 



' These figui'es refer to the list of literature at the end of this paper. 

 Journ, of Gen. iii G 



