Fair Labor Standards Act - FLSA. A maintenance worker is hired to work 35 hours at $15/hr. At $525/week, he passes the salary test (his income is greater than $455/week) but, as he cannot exercise discretion or independent judgment and is directly supervised, he is classified as a non-exempt employee.
Although Hox genes contain and are originally named because of the homeobox sequence, not all homeobox-containing genes are Hox genes (other examples include the POU genes and CDX genes). The homeobox encodes for a protein sequence called the homeodomain, which is a DNA-binding domain.
The HEXA gene provides instructions for making one part (subunit) of an enzyme called beta-hexosaminidase A. Specifically, the protein produced from the HEXA gene forms the alpha subunit of this enzyme. One alpha subunit joins with one beta subunit (produced from the HEXB gene) to form a functioning enzyme.