What expression is associated with gene traits?

The expression associated with gene traits is referred to as the phenotype. The phenotype encompasses the observable characteristics, traits, or physical expressions of an individual that result from the interaction of its genotype with the environment. This includes features such as height, eye color, and the presence of certain diseases, which are all influenced by genetic information and environmental factors.

Genotype, while closely related, specifically denotes the genetic makeup of an organism, encompassing the alleles and genes present, regardless of whether those traits are physically expressed. Chromosomes are structures that contain genes, and codons are sequences of three nucleotides that correspond to specific amino acids in the process of protein synthesis, making them less relevant to the expression of traits. Thus, in the context of gene traits and their expression, phenotype is the most accurate term.