DNA. complementary DNA (cDNA), copy DNA DNA transcribed from a specific RNA through the action of the enzyme reverse transcriptase. mitochondrial DNA (mtDNA) the DNA of the mitochondrial chromosome, existing in several thousand copies per cell and inherited exclusively from the mother.
Castor Oil. Castor oil is another good treatment for dry and chapped lips. Simply apply castor oil to your lips several times a day. You can also make a soothing treatment using one teaspoon of castor oil, one teaspoon of glycerin and a few drops of fresh lemon juice.
Treatment for Dry Chapped Lips. Treatment for dry chapped lips can vary. The first consideration should be the cause of your chapped lips. Chapped lips can be treated using special ointments and creams prescribed by your dermatologist. Constant moisturization of your lips can also cure the drying.