Some of the most common diseases are infections caused by bacteria, such as Campylobacter, Salmonella, Shigella, E. coli O157:H7, Listeria, botulism, and norovirus.
A genotype is the actual genetic coding for an organism. A phenotype is the physical appearance. For example, let's say BB or Bb is the coding for black hair. BB/Bb is the genotype, and the black hair is the phenotype.
It is the gene complement of an individual. 2. Genotype remains the same throughout the life of an individual. 3. Genotype cannot be studied directly. It can be known through the study of ancestors, mating and offspring. 4. It is not influenced by phenotype. 5. In a given environment or time, individuals with similar genotypes will produce similar phenotypes.