Figure 1From: Molecular evolution of Adh and LEAFY and the phylogenetic utility of their introns in Pyrus (Rosaceae)Schematic diagram of Adh and LEAFY genes. Open boxes represent exons, and connecting lines represent introns. Combinations of neighboring exons show the loss of intron 4 in Adh2-2 and the loss of intron 7 in Adh1-1 and Adh1-2. Arrows indicate the locations and directions of primers used for PCR amplification. Rows a, b and c are different Adh genes from Malus and Pyrus obtained in this study; Row d is the genomic Adh sequence from Fragaria (X15588); Row e is Adh1-F from Zea (AF050457); Row f is LEAFY from Malus and Pyrus. For Rows b and c, the exon 1 and intron 1of Adh2-1 and Adh2-2 were not amplified by primers Adh2-F and Adh2-R, and the empty boxes indicate incomplete exon 2 and exon 10.Back to article page