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Leaves (6 days old) obtained from the seeds of a heterozygous barley Chlorina mutant. Because of the semidominant behavior of the Chlorina mutation, the leaves segregate into a phenotypic ratio of one normal green wild-type to two light-green heterozygotes to one yellow, chlorophyll-lacking homozygote. In this spike, the ratio is 3 normal green to 13 light-green to 5 yellow.
