A virus, because it has a non-cellular structure.
It is a force resulting from the redistribution of energy contained by electrons, which tends to bind atoms together to form different types of molecules
The physical appearance of an organism is its phenotype which is determined by genotype and the environment. A phenotype is the composite of an organism's observable characteristics or traits, such as its morphology, development, biochemical or physiological properties, behavior, and products of behavior. Genotypes on the other hand are the set of genes in our DNA which is responsible for a particular trait.
