noun, Genetics. 1. any of several forms of a gene, usually arising through mutation, that are responsible for hereditary variation.
For example: 1  To insert the copyright symbol, press Ctrl+Alt+C. 2  To insert the trademark symbol, press Ctrl+Alt+T. 3  To insert the registered trademark symbol, press Ctrl+Alt+ R.
1 To register a trademark, go to the U.S. Patent and Trademark Office's Web site, www.uspto.gov.  Make sure someone else hasn't already registered the mark your category by checking the Trademark Electronic Search System database .