If you like to establish new eating habits, give yourself time. Habits take to form anywhere from 18 days up to 254 days. Missing a single day did not reduce the chance of forming a habit.
Missing one opportunity to perform the behaviour did not materially affect the habit formation process.
Genetics is the study of genes, genetic variation, and heredity in living organisms. A gene is the basic physical and functional unit of heredity. Genes, which are made up of DNA, act as instructions to make molecules called proteins.
The Human Genome Project has estimated that humans have 20,000 - 25,000 genes. Every person has two copies of each gene, one inherited from each parent. Most genes are the same in all people, but less than 1% of genes are slightly different between people. Poplar tree genome suggests more than 45,000 genes.