A SEP IRA (Simplified Employee Pension) is a retirement plan that is popular with many small business owners and self employed individuals. The 2015 SEP IRA contribution limit is $53,000 (the 2014 SEP limit is $52,000).
Meanwhile, other studies suggest that another gene, DRD4, may also play a role in traits such as shyness and anxiety. The DRD4 gene codes for a protein that binds dopamine, another chemical messenger that has powerful effects in the brain. Again, the DRD4 gene comes in two forms: a long and a short version.
There are some important things to know when considering the genetic influences on personality. First, it is important to remember that genes are not solely responsible for our personality. Personality is a complex trait. A complex trait is a trait that is influenced by many different genetic and environmental factors.Personality traits are also polygenic. This means that multiple genes are involved in determining a trait.here are some important things to know when considering the genetic influences on personality. First, it is important to remember that genes are not solely responsible for our personality. Personality is a complex trait. A complex trait is a trait that is influenced by many different genetic and environmental factors.