Fig. 3. An illustration of how environment may alter a character. This va- 
riety' of corn has ears which remain white under normal conditions, but when 
allowed to mature in the sunlight by removing- the husk it colors red Enclosing 
it in black paper, with the word "sun'’ cut out, gave the above result, the exposed 
portions being red, the unexposed grains remaining white (after Emerson). 
Fig. 4. Mendelian inheritance of "podded” character in corn. The first hybrid 
generation above, from a cross of pod and ordinary corn: the four ears beneath 
representing the character of the F 2 or second hybrid generation. In pod corn, 
each grain is enclosed by a husk (after East and Hayes). 
