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THE PKOPOKTION OF ALBINOS 



There were on huml nine ears representing as many different jilants of llie inbred maize, and 

 thirty seeds from eaeh ear were jdanted in a row in a fiat, as sliown al)ove. Matliemalieal 

 calculations based on the laws of heredity showed tliat one-third of tliese ears shoulil lack 

 the factor for albinism, and jjroduce nothing l)ut green plants; the otlier two-thirds of the 

 ears shtnild produce one albino jilant for every three green i)lants. The i)iu)tograph shows 

 the flat with the green i)lants all cut out: it is observable that one-third of the rows (Nos. 

 1, 5, 9), as was expected, produced no albinos wliatevcr, while the percentage of albinos 

 in the other rows conformed as closely to expectation as is usual when such small numl>ers 

 arc involved. Row No. 1 was cross-pollinated, as noted in the text. (Fig. 11.) 



