Your phenotype is the physical appearance of your genotype. For example, you have certain genes that code for eye color (genotype), which is physically demonstrated as brown, blue, or green (phenotype).
Your phenotype may be different than your genotype. Not all the genetic variations seen in an analysis are manifested. So, someone may have a genotype for musical ability that is never developed if they aren’t raised in a conducive environment.
In sum: the way your genes are expressed is largely affected by your lifestyle and other environmental factors.
When it comes to health, often an analysis shows that you have an increased or decreased potential for a certain health trait. It does not mean that you will necessarily express that trait.
We see this all the time. A person may be genetically predisposed to diabetes—but never become diabetic due to health behavior.
Again, your phenotype for the trait may be different than the genotype the analysis shows.
