An Athenian fleet had been driven ashore at Pylos by a storm, and, at the instigation of Demosthenes, the Athenian soldiers fortified the peninsula, and a small force was left there when the fleet departed again.
According to the official Guidelines for Human Gene Nomenclature, a gene is defined as a DNA segment that contributes to phenotype/function. In the absence of demonstrated function a gene may be characterized by sequence, transcription or homology.. Genes are composed of DNA, a molecule in the memorable shape of a double helix, a spiral ladder. Each rung of the spiral ladder consists of two paired chemicals called bases.
Rating Newest Oldest. Best Answer: DNA is composed of nitrogenous bases, phosphate groups, and the sugar, deoxyribose. Nitrogenous bases can be: adenine, guanine, cytosine, and thymine. One nitrogenous base, one phosphate group, and one deoxyribose molecule form a nucleotide, the basic component of DNA. pairs with T, and C with G. DNA is not composed of amino acid or proteins, rather it serves as a set of instructions to combine amino acids into proteins (after it hads been transcribed into RNA the RNA is translated into amino acid sequences for proteins).