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.
Most sex linked traits are linked to the X chromosome, for example diseases like hemophilia, G6PD, Fragile X syndrome, Lesh-Nyhan, Duchenne Muscular dystrophy, and also red-gr â¦ een color blindness. These are all inherited from a mutant or diseased X chromosome, and there are 2 patterns of inheritance: recessive and dominant.