Transmission: Infectious bronchitis is a very contagious poultry disease. It is spread by air, feed bags, infected dead birds, infected houses, and rodents. The virus can be egg-transmitted, however, affected embryos usually will not hatch.
Definition: Phenotype is defined as an organism's expressed physical traits. Phenotype is determined by an individual's genotype and expressed genes, random genetic variation, and environmental influences.Examples: Examples of an organism's phenotype include traits such as color, height, size, shape, and behavior.efinition: Phenotype is defined as an organism's expressed physical traits. Phenotype is determined by an individual's genotype and expressed genes, random genetic variation, and environmental influences.
Phenotypes are the expressed and seen differences of an  individual.    A genotype is tâ¦he genetic makeup of an organism with reference to a  single trait, set of traits, or an entire complex of trait; that  is, genotype is the type of genes you have. A phenotype is the  physical characteristic of an organism.