This document presents Coal Township's Comprehensive Plan. It was prepared in. accordance with the Pennsylvania Municipalities Planning Code (Act 170 of 1988). By adoption. of this Comprehensive Plan by Coal Township's Board of Commissioners, it becomes the official.
1 A mutagen is a substance or agent that causes an increase in the rate of change in genes (subsections of the DNA of the body's cells).
The mutagenic property of mutagens was first demonstrated in 1927, when Hermann Muller discovered that x-rays can cause genetic mutations in fruit flies, producing phenotypic mutants as well as observable changes to the chromosomes, visible due to presence of enlarged 'polytene' chromosomes in fruit fly salivary glands.