Fig. 2From: Genome-wide analysis of the basic Helix-Loop-Helix (bHLH) transcription factor family in maizeChromosome distribution and duplication events for ZmbHLH genes. The position of each ZmbHLH is noted on the right side of each chromosome (Chr). Centromeres are indicated by black ovals. Gene names highlighted with cyan shadows and linked by black lines are the products of gene duplication. Scale bar, 10Â MbBack to article page