Why does DNA contain thymine and RNA uracil?
D055598:Chemical Phenomena; D002621:Chemistry; D004247:DNA; D008027:Light; D009154:Mutation; D012313:RNA; D011831:Radiation Genetics; D013941:Thymine; D014498:Uracil
D014498:Uracil; D012313:RNA; D004247:DNA; D013941:Thymine