Toxicology is a branch which includes pharmacology, biology, chemistry and medicine. This involves the study of adverse effects of chemical substances (spills) on the environment. The toxicologists studies the dose of chemical spills and the and its influence on the organism. Some factors affecting the chemical toxicity includes dosage and environment.
DNA is housed in the nucleus in eukaryotes. DNA is coiled around histone proteins and condensed into chromosomes. The ends of chromosomes are called telomeres. Chromosomes are joined at a place called the centromere.
