A population in which there are several mutant alleles for a specific gene. A situation where different alleles of a gene cause different severity of disease. A situation where people with the same genotype might have different phenotypes. A situation where people with the same phenotype have different genotypes.
For all non-technical questions, including procedural, case-related, or general questions about the Court, you must contact the Office of the Clerk of the Court at (202) 521-0700 or by postal mail at U.S. Tax Court, 400 Second Street, N.W., Washington, DC 20217, Attention: Office of the Clerk of the Court.
TeleTax: 1-800-829-4477 - Has recorded tax information and automated refund information. call this number if you just want to hear information and not talk to a person. IRS Business Assistance: 1-800-829-4933 - Call this number if you want to talk to an agent about your business, not your personal taxes.