Deoxyribonucleic acid or DNA is a molecule that contains the instructions an organism needs to develop, live and reproduce. These instructions are found inside every cell, and are passed down from parents to their children.ach nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C). The order of these bases is what determines DNA's instructions, or genetic code.
Hello, Dryness of scalp can be due to hormonal imbalance, poor health, poor hygiene, allergic hypersensitivity, lack of rest, emotional stress, excessive consumption of sugar, fat or starch, heredity predisposition and medical causes like eczema, atopic dermatitis or seborrheic dermatitis.
Eczema is a widespread and unpleasant condition caused by the skinâs overreaction to common substances such as soap, food and dust. The skin reddens, itches, and becomes dry, scaly or bubbly. Annoyingly, these dry patches of skin may also ooze a watery or sticky fluid.Eczema has the ability to make life miserable for young and old. How far the rash spreads depends on the person.he skin reddens, itches, and becomes dry, scaly or bubbly. Annoyingly, these dry patches of skin may also ooze a watery or sticky fluid. Eczema has the ability to make life miserable for young and old. How far the rash spreads depends on the person.