As physicians, we need to know some definitions in Genetics which are related directly to our practice and guide us to diagnose and treat a lot of genetic disorders. These items include genome, genotype, phenotype, genetic code, gene expression, etc.........
Which one of the following choices describes the definition of a phenotype?
A- Genetic history of an organism
B- DNA structure that determines the expression of a trait
C- An observable physical or biochemical trait on an organism
D- Physical location of a trait on a DNA molecule