The X chromosome contains many more genes than the Y chromosome, many of which have functions besides determining sex and have no counterpart on the Y chromosome. In males, because there is no second X chromosome, these extra genes on the X chromosome are not paired and virtually all of them are expressed.
The GS-5 pay grade generally marks an entry-level position. Starting salary for a GS-5 employee is $27,982.00 per year at Step 1, with a maximum possible base pay of $36,379.00 per year at Step 10.
Base salary ranges for each grade are provided below, but increase based on location. For instance a GS-7 position pays $36,783 in Atlanta, while the same position pays $41,367 in San Francisco because of the difference in cost of living.