It is grouped into 23 pairs of chromosomes, half coming from the mother and half from the father. Two of these chromosomes, X and Y, determine a person’s sex.
Each chromosome is composed of more than 25,000 genes, which are information units that determine hair color, skin type, the number of white blood cells and so on.
DNA is represented by 4 letters corresponding to each of its nucleotides: Adenine (A), thymine (T), cytosine and guanine (G).
Alterations to these “letters,” known as SNPs (single nucleotide polymorphism), are produced along the genome.
These changes affect our body directly, making it stronger or weaker. For example, an alteration in the gene responsible for producing collagen may cause us to have a greater or lesser amount of collagen than usual and, therefore, we are more or less likely to have wrinkles.