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.
What Science Says About Handedness) But by conducting a genome-wide association study â in which scientists compare a wide array of genetic differences in right- and left-handed people â in four different population groups, the research team found that variants in the gene PCSK6 contributes to handedness determination.