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- the sum total of the organism’s genetic information
Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row
- hereditary constituent of an organism or a group of organisms based on gene content; contrast to phenotype
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby
- The structure of DNA that determines the expression of a trait.
- A genotype is an individual's collection of genes. The term also can refer to the two alleles inherited for a particular gene. The genotype is expressed when the information encoded in the genes' DNA is used to make protein and RNA molecules. The expression of the genotype contributes to the individual's observable traits, called the phenotype.