W. llATKSItN 1:1 n. C. l'LNM'TT. — IIEIiri'I.ICATluN lll- iF.liMS IN SliHIKS 01' GA.MKTKS. !)'.» 



REDUPLICATION OF TERMS IN SERIES OF GAMETES' 

 By W. BATESON. and R. C. PUNNETT, 



Dii-c.-tor of llifJolin lnnf> ll,>i Ii(mI1iii:iI IVotesor of Biolcigy, Cainhridye 



liistilulion, I. ni, don. • University. 



Soiiie years ago \\i' sIkiwi'iI IIkiI cci-hiiii ImcIoi-s were parlially coupled 

 llial inslead of tho l'aniiliai- Al! : Ah ; al!, ah, llic .séries ol" gamètes was 



M, W. lî.ïTESUN. M. R. c. l'D.\.\ETT. 



7 \\\ : I .Vh : 1 aB : 7 ah. Subsctiuenlly olher siinilar séries were discovcreil 

 in liie lurm l.j : 1 : 1 : K); T)! : 1 ; I : 51, elr. 



In otlier séries of gameles we founcl Ihal liie faclors A and Bwerc rc/irlh-il, 

 so that the séries of gameles appeared lo be merely AI) and aB: for on Ihe 

 earlier évidence this repulsion seemeJ to be complète. 



In papers lalely published by ourselves on llie Sweet Pea [Lallnjrax mln- 

 ratus) and (jregory on Pviimda sinens>!i il was proved thaï if coupling of AB 

 occurs in Ihe Fj gamètes from .\Bxab, Ihen repulsion of A and B resulls 

 from Ihe union AbXaB. 



Eviilciice /tas now bem) fninvl irliic/i /inirrx l/mt in /■calili/ Imlh « roz/plinij » 

 and « répulsion » are p/iases of lltc t^iniir /i/ii-iiuimoiun, ami Huit in l'orh Ihe c/fn-ls 

 are produceil by reduplicalinn uf t/io^r i/mneh'^ ii'/iirk n'prcxrnl thr puniilal 

 coinbinalion». 



The apparent compleleness of the répulsion is illiisory and is caused hy 

 Ihe comparative rarity of the fourlh lenii In the séries, heing merely a conse- 

 qvience of dominance. 



The casewhich led lo Ihis discovery is llial of a peculiar misshapen Sweet 

 l'ea in whiclî Ihe keel is so deformed IhaL Ihe flower slands open like a 



1. Cdimiiunirriiion Diile ;'i hi |iiv 



du' hi CunliTence. 



