So he had a card made showing charity to the poor, and the Christmas card was born. Subsequent postcards produced by publishers from the 1870s until World War I featured everything from nativity scenes to families around the Christmas tree. Early cards were lithographed and often adorned with silk, lace, and satin. Between 1898... Continue Reading
DNA is more stable than RNA. DNA is double-stranded and forms a double helix. RNA is usually single-stranded and folds back on itself to form stem-loop structures. RNA has 2' â¦ -OH group that can participate in intramolecular reactions, facilitating hydrolysis.
Three of the nitrogenous bases are the same for both RNA and DNA: guanine, adenine, and cytosine. Thymine, the fourth base pair found in DNA, is replaced by uracil in RNA. DNA has deoxyribose sugar while RNA has ribose sugar. The deoxyribose sugar has one less oxygen atom than the ribose sugar.