1 In biology, double helix is a term used to describe the structure of DNA. A DNA double helix consists of two spiral chains of deoxyribonucleic acid. The shape is similar to that of spiral staircase. DNA is a nucleic acid composed of nitrogenous bases (adenine, cytosine, guanine and thymine), a five-carbon sugar (deoxyribose), and phosphate molecules.
PA Power & Light (PP&L)------------------------------ 800-342-5775. UGI Utilities, Inc. (Gas)----------------------------------- 717-270-2545. Verizon (telephone)-------------------------------------- 800-483-4600. South Hanover Township Historical Society--- 717-566-8929.
SCHOOL DISTRICT OF BOROUGH OF BRENTWOOD 3601 Brownsville Road Brentwood, Pittsburgh, PA 15227-3117 2017 - 2018 Directory Revised: 11/16/2017 SCHOOL BOARD (412-881-2227) Name Position E-mail Address Kircher, Robert F. President, School Board kircherr@bb-sd.com Gaughan, Roger Vice President, School Board gaughanr@bb-sd.com Werner, Donna Secretary, School Board wernerd@bb-sd.com Topolosky, Gary Assistant Secretary, School Board topoloskyg@bb-sd.com Briner, Richard School Board Member brinerr@bb-sd.com Hayden, Amy School Board Member haydena@bb-sd.com Johnson, Dale School Board Member johnsond@bb-sd.com Kraeuter, Kristie School Board Member kraeuterk@bb-sd.com Schaap, David School Board Member schaapd@bb-sd.com ADMINISTRATIVE OFFICE (412-881-2227)