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.
Vitamins & Minerals That Treat Chapped Lips. A variety of vitamins and minerals can heal chapped lips. Photo Credit Kras1/iStock/Getty Images. Chapped lips, also known as cheilitis, can occur when your lips are depleted of moisture.Symptoms of chapped lips include dry, red, sore and cracked lips that split and bleed when you smile, talk, laugh or eat.itamins & Minerals That Treat Chapped Lips. A variety of vitamins and minerals can heal chapped lips. Photo Credit Kras1/iStock/Getty Images. Chapped lips, also known as cheilitis, can occur when your lips are depleted of moisture.