374 lock: studies in plant breeding 
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Thus, out of 44 yellow seeds sown, 16 plants gave rise to 1 013 
yellow seeds only, whilst 28 plants yielded a mixture-altogether 
877 yellow and 275 green seeds, or 3:0-94. Eleven plants from green 
seeds produced 291 green seeds and 4 yellow, the latter being pro¬ 
bably examples of the effect of exposure upon properly green seeds, 
such as was described as being frequent in the case of Telegraph 
