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.
Like DNA, RNA is composed of its phosphate group, five-carbon sugar (the less stable ribose), and four nitrogen-containing nucleobases: adenine, uracil (not thymine), guanine, and cytosine. Base Pairing. Adenine links to thymine (A-T) and cytosine links to guanine (C-G). Messenger RNA (mRNA) transcribes genetic information from the DNA found in a cell 's nucleus, and then carries this information to the cell's cytoplasm and ribosome. 2  Transfer RNA (tRNA) is found in a cell's cytoplasm and is closely related to mRNA as its helper.