IDT requires both strands of Genes and MiniGenes products to be 100% complementary. Therefore, mixed bases and modifications are not available for this product type—Genes and MiniGenes sequences may only be composed of A/C/G/T bases. Genes and MiniGenes
products are delivered double-stranded in a vector. Ultramer™ Oligonucleotides
, which allow mixed bases, can be used for gene synthesis if your method allows.