Fig. 3.

MdMYB1 genomic DNA in ‘Granny Smith’ and ‘Golden Delicious’. a: Diagrammatic representation of genomic organization of the MdMYB1 gene (not drawn to scale); the numbers refer to positions relative to the first nucleotide of the start codon (ATG); the coding sequences (exons) are shown as blue boxes and noncoding sequence is shown as a black line. Exons, introns, and the promoter region are labeled. b: Alignment of the promoter region sequences around − 2000 bp from the translation start codon of the MdMYB1 gene. The two reference sequences, MdMYB1–1 (GenBank: DQ886414.1) and MdMYB1–2 (GenBank: DQ886415.1), are enclosed by a dashed red box. The nucleotide polymorphisms are identified in the 5′ upstream region of the genomic sequence (− 1690 to − 1601 bp) of the two MdMYB1 alleles