The trait that describes the collected results of phenotypic expression of Genes - the karyotype describes the physical form of the {finally composed} shape of the organism.
Added:
A polymorphic trait. Could be the result of polygenic genetic composition, or anything in the environment, such as temporal or physical separations in the same population of organisms.
Aa AA aa If A dominant, two phenotypes.
Alleles
single gene
Many possible genotypes, producing ,any possible phenotypes.
Eight.
Aa AA aa If A dominant, two phenotypes.
Phenotypes
Phenotypes
Alleles
the offspring have two factors for each trait
single gene
Many possible genotypes, producing ,any possible phenotypes.
The number of phenotypes produced for a given trait depends on how many genes control the trait.
of two different phenotypes
A discrete trait is a trait which doesn't have a range of phenotypes. For example, tongue rolling is a discrete trait as an individual can either roll their tongue or not roll their tongue. There is no phenotype between these two phenotypes.
codominance or incomplete dominance
Many possible genotypes, producing ,any possible phenotypes.